I always felt that way with Kojima Productions for Metal Gear Solid games, Capcom studios based on Resident Evil games and Squaresoft from Final Fantasy games (although ever since Square Enix merger quality on FF games has arguably been slipping). So for me it's more on a franchise title basis than its been about developers. All devs/publishers inevitably have some hit and miss games. I certainly won't have to read the reviews for God of War III before buying either. I trust Sony Santa Monica with that IP. Criterion for Burnout is another dev I trust for that franchise and I really like Pixel Junk lately for Monsters & Eden on the PSN.
Actually if I had to name one dev I completely trust no matter what type of game they make it would have to be Insomniac Games.
