If you still have the multi-tracks from the least recording session, Fran, all you have to do is rerecord the MIDI Parts (I'd go with the BK-5 simply for the better drum kits) and mix in the vocals you already did. Doesn't seem much point doing them over, is there?

And Mike... You'd be amazed at how LITTLE the audience cares whether you have the latest, greatest, or an old 15 year old arranger. If you entertain them, it's job well done. Retro sounds dominate the charts, and audiences, unless presented with a nice simple A/B comparison, will happily listen to just about anything and say it sounds great (if you play it well!). Push comes to shove, I'd go out and gig on a G1000, and doubt I'd get ONE comment about how old it sounds!