Our current 2012 Montana 3585SA is our second Montana. The first one was a 2008 3400RL. We are full timers and couldn't be happier with both units. Only a couple minor issues and they were taken care of promptly and properly to our satisfaction. Just like any of the others I feel that the most important part is dealer...dealer...and dealer. Our dealer has his techs do a PDI over a 3 day period with all systems connected and tested and a detailed check list completed. When that is completed, you do your own PDI.
If any particular questions feel free to PM me.
BTW, the Montanas are now built on a 12 " frame and I'm sure the 2014s were too.