Hi,
i own a TU250x, the older version with carb, from 1998, with some small custom work and i am very happy with it.
Good consumption (about 3l/100km), light wheight, easy to maintain, good handling, very reliable...all you need for a city bike or commuter.
I got 40.000 km on my odometer.
As for a long trip bike i dont think is made for this.
Top speed is about 110-120km/h.
This is a US forum about the tu250:
http://tu250riders.com/You can find all you need there!
My 2 precious: