I got mine in the spring. Top, down I have burner (HLT), shelf (mash), burner (keggle). I love just having a stand and not having to set up saw horses and tables. Never felt safe that way. I'm a diy kind of guy, but with a 40+ hour a week job and 2 kids under 10, building one from scratch just wasn't going to happen. I saw the top tier as a good alternative. It's basically a kit, where you get to build it and feel like its your creation (sort of).
The thing is solid, but still mobile. I have a old concrete driveway with cracks and it rolls good where I want it to go. If you have a nice, smooth drive way, this thing will roll in and out of storage very easily. The burners are nive also. Took me a couple brews to get the feel for where to have the gas turned up to. But, now I go full open, then back it off just a half turn or so and get a good flame and it heats up quick. I don't think I am getting the fuel efficiency that they claim they get, but it's hard for me to measure this, so this is just a feel. I guess I could measure it if I really wanted to, but....maybe some day.
All in all, I am really happy with the purchase. I don't think I could have made one much cheaper, with similar quality.