I put two bicycles on a 1.25" receiver hitch rack at the back of our 2006 Scion xB (last year of the first generation xB), and I can tell a difference going up hill (the carbon-fiber spoiler over the rear door does nothing, ha ha). I can't imagine pulling a 900 pound trailer. I had an '04 CRV and it seemed much more capable. I haven't tried to tow with either. The brakes on a xB are disposable. If you tow with it, expect to replace your brake rotors often. I really like our xB. I'll keep it until I run it into the ground, but I'm glad I don't need to tow with it.
The white Scion pictured in a previous post, with an Aliner trailer, is the second generation xB and it has a bigger engine. It's pretty much a different car than an '05 xB.
Given the options, I'm leaning towards tear drop. The Mypod I looked at offered little more than a bed and a TV. Not very practicle for camping, but I can see the appeal to people who travel and only eat at restaurants. The Aliners I've encountered seem rather expensive, and they gotta be heavier than a tear drop, impacting fuel mileage, too. It's nice to have an indoor kitchen, but I'd probably stick closer to my available vehicles' limitations.
Let us know how you do. Good luck.
