I have the A126 and love it. It's great for my wife and I. It our first camper and tows pretty well with my 2 door Jeep Wrangler.
Like others have said, consider what you can tow with your tow vehicle. If I could have gone a little larger I would have strongly considered the R-pod as it can be had for just a little more than the A126. It is too much trailer for my Jeep however.
Keep in mind that the floor plan on the A126 is designed for 2 people. That is due to the inclusion of the cassette toilet (versus the porta-pot in the A122 or A128). I like the cassette toilet and just the 2 of us meant it was a good fit. We like the hard side aspect, but the smaller easier to tow folding camper format fit our towing ability. The A126 (like all the A-series campers from Rockwood) has all the basic comforts including a nice fan, fridge, stove, outdoor grill (option?), and microwave. Heating and cooling offer standard heat Pump / AC, with optional gas furnace (ours has the gas furnace, and is a must if you ever do cold weather boon docking).
Search my profile for an in-depth review that I wrote after getting aquatinted with out new A126.
2011 FR Rockwood Premiere A126 Hard Side
TV=2011 Jeep Wrangler Sahara 2 Dr
Reese 66065 WDH, Curt WDH Shank #17120
Prodigy P2 Brake Controller, Mopar 7-pin Harness
B&M Transmission Cooler (#70268)