I haven't heard of any common tranny probs...If the 225dx is in a lot better shape and cheaper I'd go with it. Owned one and its a pretty nice ride but I would definatly prefer the SX if I had a choice over the two in similar condition.
-86 Polaris Scrambler 250r/es - sold
-84 200es Big Red
-92 Ski-Doo Formula Plus 583 -88 Safari 377 -68 Super Olimpique 299
-87 Jeep XJ 5" lift/many other mods-sold
-89 F-150 4" Lift/33s
-90 Acura Integra - '83 Mustang 5.0 convertible (the new project)
Ask me about custom cut decals!