How is the sound quality of Behringer combo bass amps? I'm looking at purchasing a powerful (250w+) combo amp to play with, seeing as how I currently lack the cash, the knowlege, and the need for a serious amp + cabinet rig. I'm seeing a couple of Behringers, and in particular, the Behringer Ultrabass BXL3000, a 300w 1x15 combo. It's relatively inexpensive as well. Any thoughts or ideas, or even suggestions on something to fit my needs? If suggesting something new, keep in mind that built in effects and/or tone presets aren't appealing to me.