You'll have to do some research to see if the 2010 models had the roof rail and wet bay problem If so your next step is to find out if the coach has been to Red Bay for the repair. Once taken care of I would not hesitate to put the Bus on the top of my list. Tiffin builds quality MHs.
Hop over to the Tiffin forum, other 2010 Bus owners can add more info.
Paul, Kathy, and Tux the Mini Schnauzer
2014 Tiffin Phaeton 42 LH, 2013 Honda CRV
"When the time comes to look back, make sure you'll like what you see"