i have the tour with the Diamana X-stiff shaft and love it. it goes about the same distance as my 905S but is much more consistant and forgiving. it also looks a lot better at address than the regular one. i reccomend it to low to mid handicappers who are looking for solid distance and plenty of forgiveness without sacrificing a ton of ability to work the ball.
If you are looking to buy I would say hold off, as there will be a new nike driver released soon called the SUMO. Great big square looking thing...It may already be released in the states, I got some inside track info over here to let me know about it