Interesting... personally, I wasn't interested in feeding Halo (Spot's Stew) since I feel its price was not worth its ingredients. Plus I think its larger cans are smaller than most? EVO my cats liked, but the 95% Chicken was the main winner with them, and Cat/Kitten version was hit and miss... Ziwi I never would try due to its price being prohibitive... it's likely the most expensive food on the market.Yes price does factor in, EVO and Halo will be feed more frequently as they are less expensive by far. Ziwi peak is very expensive but is high in protein so it is a better value than Fromm or Blue freedom. Petsmart actually sells Blue freedom for less than any of the online retailers. I am adding Fromm and blue in for variety so she does not get bored with the others.