out of interest, what kind of house are you in? if you're in a flat, or semi, then yeah, probably any valve amp, even a 5 watter is too loud to crank, without an attenuator. (and if you get an attenuator, you could spring for a louder amp that'd do gigs too, and probably have more features, if you're into features...)
on the other hand, if you live in a (nomatter how small, just as long as you don't share any walls) detatched house, and can persuade everyone else who lives with you to leave to go for a walk pretty frequently, you can pretty much crank any wattage of amp (well, 100 anyway). Assuming the other house aren't TOO close together.
Of course, the second one is by no means personal experience. And I haven't got any complaints yet... :lol: