Hairball formula food

Riley and Xander are currently eating a mix of Royal Canin hairball dry (mixed with Taste of the Wild and California Natural)

I see that Avoderm makes a hairball formula also, which is much cheaper. Does anyone see a problem with feeding the avoderm instead of the RC? I know neither is great quality but it has made a HUGE difference in Riley's hairballs so I want to keep feeding it.

Avoderm

Royal Canin

the third option (at petsmart) would be Authority hairball formula.

Any opinions on the Avoderm or Authority? I really need to find one less expensive than the RC but I don't want to sacrifice too much quality, such as going to SD or Iams.

Avoderm

Features & Benefits:

* Made with vitamin-rich avocados for healthy skin and coat
* Tasty Chicken & Herring Meal Formula
* Nutrition for an indoor lifestyle
* Helps avoid the formation of hairballs
* Contains omega 6 & 3 fatty acids for a shiny coat and healthy skin

Ingredients:
Chicken Meal, Ground Whole Corn, Whole Ground Brown Rice, Corn Gluten Meal BOTH in one I dont like , Chicken Fat (Preserved with Mixed Tocopherols and Ascorbic Acid), Tomato Pomace, Oatmeal, Herring Meal, Oat Branaid s in hairball removal , like corn I wonder why they need this and the oatmeal, Natural Flavor, Pea Fiber, Dried Brewers Yeast, Dried Chicken Liver, Dried Chicory Root, Avocado Oil, Avocado Meal, Taurine Supplement, Lecithin, Potassium Chloride, Calcium Carbonate, Dried Yucca Schidigera, DL-Methionine, Dried Kelp, Parsley Flakes, Vitamin A Acetate, Vitamin D3 Supplement, Vitamin E Supplement, Vitamin B-12 Supplement, Riboflavin Supplement (Source of Vitamin B2), Niacin, Choline Chloride, Calcium Pantothenate, Folic Acid, Pyridoxine Hydrochloride (Source of Vitamin B6), Thiamine Mononitrate (Source of Vitamin B1), Biotin, Ascorbic Acid (Source of Vitamin C), Zinc Polysaccharide Complex, Manganese Polysaccharide Complex, Iron Polysaccharide Complex, Copper Polysaccharide Complex, Cobalt Polysaccharide Complex, Calcium Iodate, Sodium Selenite.
2 meats 3grains ie 1 to 1.5 ratio ( my pick easier no cellulose and a reasonable meat to grain ratio )

32 protein 16 fat
RC
Ingredients:
Chicken meal, corn gluten meal, brown rice, corn, chicken fat (naturally preserved with mixed tocopherols, rosemary extract and citric acid), chicken, rice hulls, natural chicken flavor, beet pulp (sugar removed), dried brewers yeast, cellulose, ground psylliumlikely used to help with hairballs .. oat bran is much gentlier, salt, soya oil, salmon oil, calcium sulfate, dried egg powder, fructo-oligosaccharides, potassium chloride, choline chloride, borage oil, sodium tripolyphosphate, DL-methionine, L-lysine, L-cystine, taurine, Vitamins [dl-alpha tocopherol (source of vitamin E), L-ascorbyl-2-polyphosphate (source of vitamin C*), niacin, biotin, riboflavin (vitamin B2), d-calcium pantothenate, pyridoxine hydrochloride (vitamin B6), thiamine mononitrate (vitamin B1), vitamin B12 supplement, folic acid, vitamin A acetate, vitamin D3 supplement], Trace Minerals [zinc proteinate, zinc oxide, ferrous sulfate, copper proteinate, copper sulfate, manganese proteinate, manganous oxide, sodium selenite, calcium iodate], L-carnitine, green tea extract.
34 protein 15 fat

1 meat 2 grains

Authority
Ingredients:
Chicken, Chicken Meal, Brewers Ricelow quality , Corn Gluten Meal, Ground Corn, Animal Fat (preserved with Mixed Tocopherols), Beet Pulp (a source of natural vegetable fiber), Dried Cellulose, Natural Flavor, Dried Egg Product, Canola Oil, Corn Oil, Potassium Chloride, Vitamins (Vitamin E Supplement, L-Ascorbyl-2 Polyphosphate, Niacin, Vitamin A Supplement, Thiamin Mononitrate, D-Calcium Pantothenate, Vitamin D3 Supplement, Riboflavin, Pyridoxine Hydrochloride, Folic Acid, Biotin, Vitamin B12 Supplement), Choline Chloride, Minerals (Zinc Sulfate, Ferrous Sulfate, Copper Sulfate, Manganese Sulfate, Calcium Iodate, Sodium Selenite), Taurine.
One meat two grains
32 protein 16 fat

I know none of them are great, since they have all the grains, but if you had to choose one, which would it be? (Keep in mind this will be mixed probably half and half with taste of the wild.

Currently its the RC, but I'm hoping the Avoderm would at least be equal to RC so I could switch them.

Avoderm

Features & Benefits:

* Made with vitamin-rich avocados for healthy skin and coat
* Tasty Chicken & Herring Meal Formula
* Nutrition for an indoor lifestyle
* Helps avoid the formation of hairballs
* Contains omega 6 & 3 fatty acids for a shiny coat and healthy skin

Ingredients:
Chicken Meal, Ground Whole Corn, Whole Ground Brown Rice, Corn Gluten Meal BOTH in one I dont like , Chicken Fat (Preserved with Mixed Tocopherols and Ascorbic Acid), Tomato Pomace, Oatmeal, Herring Meal, Oat Branaid s in hairball removal , like corn I wonder why they need this and the oatmeal, Natural Flavor, Pea Fiber, Dried Brewers Yeast, Dried Chicken Liver, Dried Chicory Root, Avocado Oil, Avocado Meal, Taurine Supplement, Lecithin, Potassium Chloride, Calcium Carbonate, Dried Yucca Schidigera, DL-Methionine, Dried Kelp, Parsley Flakes, Vitamin A Acetate, Vitamin D3 Supplement, Vitamin E Supplement, Vitamin B-12 Supplement, Riboflavin Supplement (Source of Vitamin B2), Niacin, Choline Chloride, Calcium Pantothenate, Folic Acid, Pyridoxine Hydrochloride (Source of Vitamin B6), Thiamine Mononitrate (Source of Vitamin B1), Biotin, Ascorbic Acid (Source of Vitamin C), Zinc Polysaccharide Complex, Manganese Polysaccharide Complex, Iron Polysaccharide Complex, Copper Polysaccharide Complex, Cobalt Polysaccharide Complex, Calcium Iodate, Sodium Selenite.
2 meats 3grains ie 1 to 1.5 ratio ( my pick easier no cellulose and a reasonable meat to grain ratio )

Thank you!

I think I will get a small bag to see if they like it, and start mixing it in a little bit. It just didn't make sense to me to keep paying double the $$ for RC when it has just as many grains!

They have been on it for almost 3 months now (the mix) and Riley has had only 2 small hairballs, compared to having one almost every week before. He also gets a small bit of cat grass each day usually too.