A few interesting things I found about the 10rt:
- shortest travel length
- largest beds when looking at comparable popups
- electric brakes
- 5 piece tent construction, so if there is a problem, you could replace a piece, not the whole thing
- 07 & 08 models boast a load capactiy of about 1 ton (versus earlier models that were about 750lb), so they've beefed up the frame and suspension
- yada yada yada...