I would also suggest a Tube preamp and SState power amp. You get the best of both worlds. Going the other way with a SState preamp and Tube power amp and you risk getting the worst of both worlds. I also agree with the Sonic Frontiers or Anthem preamp. They sound very solid state like in the best sense for tube equipment.
Tubes? OH YES!!! But where? Hmmm....
I'm right now running Vandy 1Bs with an aragon 24k with vertically biamped dynaco st70s. I'd like to know if the soundstage will change significantly if I switch to tubes in the preamp stage and get a solid line amp. I don't really want tubes in both stages as it becomes too mellow for me. What are the differences in having tubes in the amp stage and tube in the preamp stage?