I have a Primus Micron, but don't really like it. The pot supports are flimsy. I better, if more expensive choice would be a Soto, from what I've seen looking at one at REI. You can make a base for the cartridge that holds it with little tabs and makes it more stable. Gas stoves are simple, no matter what they look like. I would stay away from the off-brand Chinese ones though. Buy a decent brand and the quality will be there. My Primus is well made, just a mediocre design, big difference in terms of safety.

FYI, I know there are lots of photos of mountaineers using them in tents, hanging from the tent poles. They are also at high altitude. However, I wouldn't do that at all, unless absolutely necessary.