We recently traded our TT for this. 2010 Keystone Montana 3455SA. We've just had it out once so far but we really like what we're seeing out of it. LOVE all the room. It tows really well, although backing it up requires a bit of a learning curve compared to the TT. Practice, practice, practice! The only problem we've found so far was with the black tank flush system leaking. Some kind of valve was bad/broken. We took it back to the dealer and they fixed it as part of our 30 day warranty. We're taking it back out this weekend for another once over... And maybe a campfire and some burgers :B
