Thanks Jon. Nice detailed report. I did look into it and decided I couldn't see the expense being worth it for the small club we play at, but will definately keep that one in mind for future expansion. Sounds like an awsome piece of equipment.
I am looking hard at the Peavey equalizer as my solution since we rarely have the feedback problem and hopefully we can curb it with that. Too bad they don't have the autotuning of the DriveRack. That would make it so much simpler to set up.
I am also looking into upgrading my mixer to the Vocopro KJ-7800 to give me better control over existing equipment and add cross fading that I don't have.