Turner Sultan fit
I am 6'6" and just got done with a full day of demoing the XXL 2010 Sultan at MBO. It is the first bike that has allowed me to relax my reach and drop the elbows. I felt great on the ups and downs. I ride a 2004 T Burner XL and I never have really felt that it fit me just right. I have changed things around so often I do not even know where I am at, and after riding the XXL Sultan, I think I will be very unhappy. That was a hard thing to say about a Turner.
The bike I rode could of used a shorter stem, something in the 90mm range. I can not remember how many spacers were used, but it was fitted with Raceface Evolve low-rise bars. Maybe a wide set of flats would have felt nice? The stand over felt much safer than the XL Burner, but I have been running a little longer fork than recommended to try and get as much all mountain riding out of the frame as possible. This just puts the top tube a little close to the boys and it feels like a long way down on the tight stuff.
At 6'4" the XL may be a better choice and the deal at CC is a good one right now. The Sultan is pretty sick an I think it can fulfill many of your trail desires.
If anyone is getting rid of any XXL Turners, let me know. I hate to sell my frame since it has been so good to me and will last forever, but .......