Don't get me wrong--my various big rigs aren't going anywhere. But I don't *always* need to knock down walls, and a smaller onstage footprint sometimes really would be a help. So what thoughts/recommendations/experiences would folks have with regard to combo amps that are a) up to $600 used and no more than 70-ish pounds, b) stout yet flexible enough to support anything from a large horn band to a power trio, fingerstyle, slap, and pick, and c) good with a b-string? Of the combos I own/have owned, I loved the tone of the SWR Baby Blue, and my Portaflexes (B-15N and SB-12). These, however, aren't loud or low enough. Had a Peavey Databass and loved the volume and footprint; the tone, not so much. Is there some magical beast that does it all? Having read lots and lots of threads, I'm as interested in hearing intuitive observations as technical details. So, given the stipulations above, what brings the whump?