So still considering options for a bass amp. Looks likely to be a Fender Rumble (I like the Markbass stuff but the Rumbles sound good, are more affordable, and this is after all not my main instrument). The difference from the Rumble 200 to the Rumble 500 is to me a no brainer (same size, same weight, with discount less than $100 more). I think the multiple 10 inch speakers of the 500 may also be more desirable to me than the single 15 inch of the 200. So I may go for the 500. But the 100 is also interesting to me. Roughly half the price, 20% smaller and almost 40% lighter. A bit underpowered though. Mostly will be used at home for solo practice. Might occasionally be used jamming with others. If I go to a club jam, backline is usually provided around here. So is it worth even considering the little underpowered 100 watt with it's 12 inch speaker? Even at double the cost, the 500 isn't really cost prohibitive, under $550 tax included after discount.