Alright, so I have a 5-string Spector Rebop bass, a Carvin 1x15 cab, and an Ampeg 4x10 cab. I'm running a GK goldline 500 head, which I hate with the fiery passion of a thousand burning suns. A buddy of mine offered me a QSC power amp that can power the cabs better, but now I need a preamp. I'm looking into buying the BBE BMAX-T tube pre. Any ideas on if it's any good? Is there anything comparable that I should investigate? I'm playing in a technical death metal band, so I need a very clean sound, but I want some balls and bite to it, too. I like the idea of the tube pre, but I'm willing to part with that idea if something better exists. I realize that asking for the "best bass pre" is a stupid question, but obviously that's what I'm looking for. Anyway... suggestions?