I have the Vox AmPlug Bass, both the old and the new. I was digging the very minimal drum machine for practicing instead of a metronome, but yesterday I accidentally broke the new version of the plug and am back to the old kind with no drums. But before I just buy it again, I'm wondering if there's anything better out there. i want simplicity -- just a thing that goes into the bass output jack that lets me insert headphones and plays some drums (with more choices than the AmPlug). Better yet, it would play generic backing tracks in whatever key I specified. Does that exist? I can always combine the old amPlug with my iPhone and play along to a drum machine app, and I actually have an Alesis drum machine that accepts an instrument input. But again, simplicity... fewer cables and stuff to plug in is what I'm after. Any advice? Or maybe I should get a Zoom bass pedal and kill two birds (they have drums, right -- how are they?).