I have one word (maybe two)
SoundBoard.
I'm tracking out a multi-channel set I did for a friend of mine, with three sources:
akg 483's > MixPre > Korg MR1 (all in, call it $3k)
Sennheiser MKH 8040's > Korg MR1000 (all in, another $3k)
Soundboard> 2 1/4" male to male plugs > Microtrack 24/96 (the original) all in, ~$300 bucks.
The mics capture the ambiance of the show, but the soundboard feed is basically using the mics and amps of the performance, and in terms of fidelity kicks butt. A very clean source.
Of course, it's a little "sterile" so mixing with the other sources (using Adobe Audition) will warm it up a bit.
Since you're not only "with the band" , you ARE the band, getting the soundboard fees from each show will give you a huge increase in fidelity over ambient mics alone. That's where the R44 comes in.
Mike