Ok here is the food background! I used to have my cats on Nutro dry, then I switched them to wellness dry, then they were getting wellness dry and felidae chicken and rice wet, then lol I switched them to EVO and Felidae wet... Well EVO mixed with the wet made them sick (not to mention I was a bad meowmy and wasn't able to gradually change their dry diet because I ran out off food) the vet said stick with the EVO dry and no more wet food to see what happens....SO... I took them off wet (which makes me sad) and have kept them on EVO only while their tummies adjust! The kitten is fine! My 5 year old cat is good on somedays and bad on others! Some days he has diarrhea and vomits (ohhh it smells like rotten eggs)! I really don't want to tourcher them and switch them again but I am thinking I might have too! I would do this gradually of course (I have more than enough food this time)! What are some high quality lines that are easy on the stomach? I've tried Nutro, Wellness, and EVO! Nutro Im not interested in so much and Wellness is a little pricey (my cats weren't huge fans on the microscopic pieces)! NOTE.... This has to be a formula that suits both cats and isn't a bad choice for overweight cats (Tiger needs to drop some punds... he is on strict portions)! I do not want to put him back on weight management food... He blew up on it! Ok so that is my challenge, bring on the suggestions!!!!