I'm looking for a big cab loud enough for band practices and small venues. I intend to run out of my Aguilar Tone Hammer pedal into a QSC GX3 or comparable power amp. The catch is I will also be playing a keyboard and a synth in addition to my bass and bass vi, so I need some good high end as well wih a decent sized tweeter or horn. I'd also prefer if it was a widely available brand - something I could order through Guitar Center or the like. Any suggestions for a great sounding multi purpose cab?