I've fed EVO dry (and canned) and bought a small bag of CORE to supplement one of my cats dry food. To me, EVO was fine, and if you order a large bag, the price isn't as bad...it also goes a LONG way...you don't feed nearly as much as a with-grain dry food. CORE and wellness in general, IMO are overpriced.
Another option is Taste of the Wild. I have tried it with my cats and the LOVED it. It is far cheaper than even the regular wellness and evo (I think $29 for a 16lb bag on petfooddirect) and has similar ingredients. I would be feeding it now except for my UTI cat and the UTI-unfriendliness of grain-free foods.
I'd go for the EVO as more cost effective, but if you can get the TotW and your cats would eat it, it'll save you some serious money.
For wet, I haven't tried the core wet...I've tried EVO 95% cans and the original EVO can..cats wouldn't eat the original evo can...but, really like most of the EVO 95% cans.