Our cats were on the Blue spa selects, and avoderm canned, along with a sprinkle of the Blue wilderness cat food for the cat who insisted on having crunch on her food. Blue did have issues in the recall fo spring '07, supposedly the manufacturer put in some melamine-contaminated gluten into the wet foods--even though no gluten was listed on the ingredient list. So some QC issues have defintiely existed. That being said, our cats did fine on the food for over a year.
One of our cats did develop urinary crystals while on this food, but the other one has been fine. she'd alreayd had a bout of crystals on a different food, so it's pretty much just her and canned food is an issue. Ah, genetics.
EVO is another can we used briefly, that the kitty cats liked. The EVO also comes in a large can, so it ends up being cheaper than the small cans, as long as you can use it up. You can also add some water to the canned and make it soupy to get extra water into your male cat.
We've since switched them both to homemade raw. It actually works out to be something like $0.50 per day per cat to feed raw. Which is actually cheaper than the $0.58/day/cat for the avoderm or blue buffalo cans + kibble. The raw food has also worked well for the cat with crystals, and is way cheaper, and better, than the prescription SciDie crapolla she was on. And she's no longer puking up multiple hairballs a day. blech.
http://www.catnutrition.org/index.php has a lot of info on this--many owners of cats with IBD have has success with raw cat food. So it *might* be a food both your kitties could eat, even though making it is a bit of a PITA. Feeding 2 cats one food, and not needing to closely supervise who eats what, however, is worth a lot to us! If you're open to the idea of raw, it's pretty easy with cats, since they need such itty bitty amounts of food.