I'm looking for a new combo and I was wondering if you guys have played the GK 400rb/210-II, the 280 watt version. I played one for a few minutes and loved its tone, but I wanted some opinions of people who knows what they're talking about and have played it so I turn to my fellow bassists. Can the 2 tens handle a B fairly well? Is it easy to hook an extension 1x15 or 4x10 to?? Anything you can say would be really helpful, thanks guys.