The jury is still out on mine but test a Neumann KMS 105 for yourself. The 105 does not show a big prox effect acording to Neumann. Curve shows about a 2db rise on low end at 5cm. It's designed as a performance mic with a body similar to most stage mics. I've tried it on plosives and it seems to reject them well but nothing is perfect there. I am yet to try it on a strong bass singer.
It does require full 48 volt phantom power. Do not plan on useing it at all on some powered mixers that do not provide full 48 volts. I loaned it to my son's band for testing and they found out the low voltage phantom with their Mackie PA would not work.
I would recomend that you start out with a real low gain and bring it up from there. The first time I tried it was into a Shure installed sound system and I told the singer it was flat up close, good thing the limiters kicked in. The old expression eyes big as saucers was an understatement. Once gain structure was adjusted he and all the stage mic users were pleased. This group had been using Crown CM 200 and Shure SM58's.
This may not be your mic but it's a try recomendation that you may not look at otherwise. Like I said above my experience is limited with it so far but it's been positive. Here's a link to it:
Neumann KMS 105