For Thor quality issues in general just read the following topics:
http://www.thorforums.com/forums/f4/...appy-1043.html
http://www.thorforums.com/forums/f17...here-7454.html
http://www.thorforums.com/forums/f17...oach-5734.html
The big thing with the buying experience is the dealership. If you work with a good dealer you'll be happy--even if your brand new coach has a few wrinkles. If the dealer isn't on the up and up so much then you'll be on here cursing Thor when its the dealer that was the problem.
Remember that forum's will skew the perception of problems: People with problems will seek out forums looking for answers (or go to Facebook to bitterly complain). Thus when you're searching a forum you're looking at a concentration of issues when the happy campers (for the most part) are out enjoying their coaches and not posting.