Mine seem to like Canidae - the kibbles are really small too!
When I got mine they were on that 'crap' Euk. too
I switched slowly - over a 2 week period - I switched to Innova and all seemed good as far as them liking and eating something better - I didn't stick with Innova b/c it was too high in protein for my 2.
Canidae is very good though, I would def. switch form that crap Euk.
Best of luck!