I'm looking to play jam sessions, as well as practice at home. I'm not adverse to spending money, but my wife is! With that said, should I go for the Rumble 500 or would the 200 be sufficient? How about the 1x15 in the 200 versus the 2x10 in the 500 - is that a big consideration? I've only played the Rumble 100, can't find the 200 or 500 nearby. I was very impressed by the 100 though!