1. hypers might help, but not just for larger venues. works well for chatty crowd control too. They are not as natural sounding to my ears, but the GOOD ONES are awesome (by good ones, i'm talking way outside the budget of these other mics). Although, I'm a fan of the Oktava mc012 hyper cap. that sounds pretty decent out of their selection. Not stealthy though.
2. ca14 vs. AT853 caps, not sure. the difference would be minor at best (guessing) as the AT caps are pretty small on their own.
3. thats a question for Chris Church, he'll give you an honest answer on sound w/o $$ being in the equation of his through process.
Honestly, the more I go through this thread..., my conclusion would be
- sell the DPAs
- by the Church Audio cables for the Audix 12xx series.
- buy the card and hyper caps for those
YOU ARE DONE ! , and have a nice upgrade in microphones in the all around sense of things. I used to have the 1290hc from Audix, pulled some outstanding recordings with them.