Thanks for the welcome mates!

Well, since I'm invited, I'll post my opinion.
I had a used Honda XR500R model 1984.
It was my first bike and the one I learned how to drive!
It had many mechanical problems and I sold it on 2002.

I purchased a new XT660R at 29/3/2008.
Having driven 4800km so far
Well, I'm VERY impressed and satisfied with my buy!

The stability on tarmac is a thing I didn't expect, really!
Driving at 150-160kph, the bike's stability is superb.
But I don't think that the bike was designed to travel so fast so,
I usually travel at 130kph.

The rider's seat is a little stiff but the riding position is good and comfortable.
My wife, also, was satisfied at the back seat.

I especially like the way the XT turns at country-roads with many bends.
Immediate corrections are not a problem and it turns very sharply for an
adventure bike. I like a lot the Tourance tyres. I think Yamaha made a good
choice here.

Another thing that I noticed was good range. With full tank, I usually make
280-320km of mixed use. (City-travel).

And a word about vibrations...
What vibrations are they talking about?
I didn't notice any annoying vibrations on any occassion...

I'm planning a off-road trip with a friend having a Honda CRF450 to a mountain range with "passable" road.

I hope my XT will make me proud, although I have my little fears as a
newbie driver.

Thanks mates!