Tube Amp Suggestions

I have had the audio affliction for about 10 years. I am finally ready to venture into the world of tube amps and would appreciate any ideas my fellow audiophiles might have. My current set up is theta basic II with a camelot uther IV going directly into a pass labs aleph 5 and audio physic virgo II speakers. All wiring is tara labs air 1. Budget is $2,000 to 3,000 new or used.

Thanks in advance for your thoughts.