You did not mention any power requirements or new / used. But in your price range I would suggest a Conrad Johnson Premier 11a (70wpc) used; very reliable and user friendly. My first and only tube amp experience. I miss that amp and wish I had it back. In my limited experience the issues I had with tube amplification is heat, they need good ventilation, and the occasional rebiasing of the power tubes. IMO as long as stay with a reputable manufacturer you shouldn't have any major issues. You will need to replace the tubes after two or three years of normal use, however, that is farily simple. As far as sound quality versus SS you will need to be the judge of that.
Other manufacturers with good reputations are Cary Audio and Balanced Audio Technologies (BAT). Hope I could help.
Chuck
Other manufacturers with good reputations are Cary Audio and Balanced Audio Technologies (BAT). Hope I could help.
Chuck