Not an owner... yet. I've been contemplating getting an Eezi-Awn Series 3 1200 (used at about 1/2 the $$$ of new) for a while now, but am still not sure if I should take the plunge. I've read the other thread on the roof rack and RTT and fully understand the pros/cons of the RTT setup. For me the biggest issue is mounting and storing it. My D2 is on 255/85/r16 KM2's, w/ 2" RTE springs and 1" spacers all around. I have the tall version SD rack too. The RTT "should" be sitting on the floor, not the upper bars as far as I'm concerned, but that means chopping the rack to deploy to the side, or rear which I'd rather not do. It seems a lot of the debate is over ground tents, but I have a double wide Tent-Cot and it's setup is pretty quick. However ground conditions are a factor when unfolding it and taking it down.
I live in an apartment in San Francisco and while my truck does still miraculously fit in the garage (probably the only one in the city that does) I'd be left with storing it in my apt. unit, or renting a storage unit for it and other Rover parts. With the current lift I can reach the top of the rack (I'm 6'5") but none of my other friends would be a lot of help getting the RTT up there. It would have to be mounted outside of my garage which opens to one of the busiest streets in SF, 19th Ave. I can only think of a few trips per year I would use it, Mojave Road and the Oregon Discovery Trail. Sounds like I'm talking myself out if it huh? But the allure of it is soooo very tempting.