My winter/rain/city fix gear (circa '83 Trek 4 or 5 something) - 28c Paselas. Perfect tires for that bike, My Mooney, also fixed gets 28c Vittoria G+ tubulars and my custom fixed the same in 25c. (I've swapped all my good bikes to tubulars because I've had a clincher blow and come off for a crash I never want to do again. Plus really good tubulars are magic carpets.)