Carlsbad makes a couple good points. One, Tekton are so transparent a huge amount of whether you wind up happy or not hangs on the rest of your system. They will let you hear it, quite possibly for the first time ever. On this one looking at the rest of your system I think you are on solid ground.
The other point is, if you can afford it you will get even more moving up to Encore. Or for that matter Ulfberht. But your budget is $5k which makes Moab #1 with a bullet, nothing else even close.
verdantaudio, I guess you didn't read the post above yours?
40 tube watts is plenty, I'm using the 20W Raven Blackhawk now and even that is more than adequate to reach quite high levels. Measured 102dB at my sweet spot 9 feet away in my 17x24x9 room.