Given the parameters you stated, I would also suggest the Downtube Full Suspension bike. It's relatively inexpensive, can handle your size easily, has suspension to handle a variety of road conditions. While the stock components are merely serviceable, they are easily upgradeable. Everything is standard.

The biggest negative is that it's around 29lbs, as I recall. You can remove a lot of weight with some "Low hanging fruit" upgrades. Can't carry it on an airplane, though. Check out the gigantic Downtube thread on this Forum - lots of feedback and tips from users.