I currently have a dinky little Ibanez 20 watt amp. I have an Ibanez 5-string black baby, with active X pickups. I am a serious bass player and need to upgrade bad (amp wise). I have about 400 bucks to offer up on this. Now the deal is I don't want to slowly upgrade.. then again.. then again. That'll cost to much. I want to buy something now that can be used in the long run at possibly some serious gigging. Any ideas? I was thinking of maybe the Fender Rumble 100, and then utilizing the external speaker jack down the road and hooking a cab up to it. Or possibly doing that with a Crate BT100. I repeat: Any ideas?