OK, spent some time at GC this afternoon.
Tried the GK.... It just didn't do it for me. Tone shaping was just not happening, and it farted out when I pushed some lows around B-C# on the E string.
Plugged in to a MarkBass 210 of some sort. Eh... It couldn't really take the abuse either, and I didn't even hit it too hard.
Then I saw a little Ampeg Micro VR mini stack. I tried it and was surprised at how good it sounded. The tone controls are limited, and it's only 150 watts, but damn... it actually SOUNDS like an Ampeg.
Finally, the sales guy insisted I check out an Acoustic B200 combo - 200 watts through a 15. No Class D stuff here. I think this is the one, especially at $350 brand new! It's heavy - around 70 pounds, but I can deal with that. Lighter than a Redhead, and blows away the GK that I really wanted to like. Probably going back tomorrow to pick it up.