Another vote for the Woo. Order it without the preamp functions, have Woo parallel the input tubes for lower impedance and more power, get yourself a Tung Sol 5998 output tube, and if you can afford it go with a set of Amperex input tubes and I predict that you'll be very happy with the sounds that come out of your Woo.
BTW, the Amperex USA White Label 6922's that I'm using are just incredible sounding in my Woo. I've never before heard vocals and instruments sound so separated and suspended in space as I do through the Amperex's, and although I was a bit skeptical before, I'm afraid I'm now going to have to admit that the Amperex tubes are well worth their astronomical asking prices. BTW part II - Amperex tubes take a looong time to fully burn in - when new mine sounded bloated in the bass, lacked dynamics, were thin sounding and had a midrange glare that gave me headaches, and after about 80 hours of burn in I took them out of my amp and laid them aside for a couple of months. But after building a Senn cable and a new set of interconnects for my rig I thought I'd pop the Amperex's back in and give them another chance. They still sounded bloated and glarey, so I burned them in for another 70 hours or so and they really started coming around. The glare has all but disappeared, the bass is warm and tight, and dynamics are very good. But oh that soundstaging and sense of space and truth of timber - very very good stuff.