Fsmithjack,
In your budget, there are many excellent tube amp options.
1. QuickSilver V4 with KT150. If you order direct from QS, Mike offers a 30 money back home audition.
2. Carver Crimson 350 with KT150. Each pair are custom so you can order bypassing volume control ...
3. PrimaLuna Dialogue Premium HP mono with KT150
Then used, VAC, ARC, CJ ...
I'm a tube guy so I would stick with tubes. You can't beat the 3D, layering, timbre ...