We have a 2005.5 Montana 3400RL and are extremely happy with it. Tow with a 2005 Dodge Ram 3500 Quad Cab Cummins diesel. For a full discussion of this model (good and bad) and all other Montana models, the place to go is the Montana Owners Club (MOC) Forum
Especially check for posts by "richfaa" who, after spending spent several years investigating various RV options and has ordered a new 3400RL. Few people know more about the unit and few are more critical.