Full Timing in a TM?

I am interested in purchasing a TM, particularly as it is something that I can efficiently tow behind a GMC Envoy (5600# max). I am interested in some extended travel in it in the next few years. Maybe Alaska and/or Canada. Has anyone used one for full timing? Any TM recommendations from the viewpoint of several months on the road? If you did it, would you do it again? You can email me at home or on the forum.
Bob Rederick