Are you asking because you're wondering if it tastes better than CD?
All 3 of my cats eat RC Urinary S0 dry and love it. They've never had CD so I don't know if they would like it. Only one cat, Sydney, had urinary problems (crystals) but now they all have to eat it, because Sydney must stay on it forever. Sydney won't eat canned food, but the two others do so they get a little canned food (California Natural) mixed with water. Sydney doesn't drink much water, but his urinary problems haven't returned.
A while ago I bought a bag that was very crumbly. The cats ate it anyways. The next bag was better. The current bag is back to the way it used to be except they may have changed the formula a bit because the colour is lighter.
RC Urinary SO dry makes 3 sizes. Perhaps you could try the smallest bag. When I change foods I don't mix the old in with the new. None of the cats had any problem switching to RC U SO.