good question. the answer is simple: i already had it... ;o)
i bought my TTR next to my BMW r1200gs for allroad/ offroad tracks. during last summer when the plan for the "big trip" materialized it turned out that a TTR is not so bad. simple to maintain, light, proven technology and standard tire sizes and components. yamaha parts and dealers all over the world.

It's not sexy, not fast, but pretty solid.