If tubes weren't important I'd honesty say he might be better served by a moderately ported ss combo with reverb. That being said though, for many -especially on guitar - tubes are king. There are plenty of reasonably affordable options, too. My only real experience is with low-powered single-tube class A stuff that might do 5 Watts on a good day, this stuff is a bit on the low power side, but I know a guy with a jet city head that he quite likes at about 20 watts, that might work quite well.