When we fed kibble, we rotated. The favorites here were Acana/Orijen, Nature's Variety w/ Raw Boost and Wellness Core. Fromm went over well, but their coats suffered.
I do have to agree with Stella (Wicked Pixie) that kibble is not really a good idea for cats. Not only is it full of unnecessary veggies, but cats don't have a reliable thirst sensor, because they are designed to extract their water from their prey - this means that the vast majority of kibble fed cats are running around dehydrated, since they don't know they're thirsty until it gets serious. Kibble not only doesn't provide fluids, but it actually extracts them from the body (have you ever sat and ate a crapload of crackers? Remember how dry and thirsty you got from that? Same thing, only they don't feel it as instantaneously as you do).
I would maybe up the amount of Ziwipeak, or toss the kitty a piece of meat every once in a while. My cats are always looking for hand outs -- They are fed large portions twice a day, so they can basically eat til they're full, but if I get something out to eat myself... or even walk past the fridge, they're crying like they haven't been fed in a week! Cats are little mooches!