My new favorite condensers are modded Oktava 219's. Mine have all the common mechanical mods done and the stock electronics. May or may not do the electronics mods down the road. They sound pretty great the way they are now. Way, way cheaper than a Neumann.
my acoustic trio uses one 219 placed center of the semi circle. We swing it a little towards the lead vocal and the backup leans in a little. I keep my cab off to the side of the circle a bit and hte mic does the acoustic instruments and voices realy well. Great mic on the cheap.