I personally would recommend trying to get free samples..I am sure some companies will still do this (on my mobile..an old one at the mo..so multi search no good..sorry

) when we had our cat that now lives with my parents..we had him on james wellbeloved and the occasional packet of felix with gravy..A few years ago after being at my mums he
started turning his nose up at that..so he is happy atm with iams dry and gourmet pate rubbish as a treat lol..he was never a lover of fresh fish or anything ..however a very muscular cat now with a shiny coat. They dont give him wet food with gravy anymore..he just licks the gravy off and leaves the 'meat'
Yeah at his annual vet appointment..he was called a gorgeous boy..I think if the cats are healthy and in top condition you are doing great! Just my opinion xx