I think that Speakerfritz point is valid from his experience. But his is not the only experience. I did not buy my tube amps from a restorer or a boutique builder. My purchase was not a crap shoot nor has it ever been a project. I have never experienced humm's, crackles, pops, buzzes, or smells. I simply bought new amps from an authorized dealer of top quality manufacturer. My only project has been to enjoy the music. I know that there are good amps out there in your budget. You might have to do a little traveling to find the right one for you. But that can be part of the fun.