Davimi, then the IBF's do a great job. Connections are Industrial screw terminals, so connecting it all is as easy as possible.
Rating is at least 20a per channel continous, and those are German conservative amps, not Chinese optimistic ones.

Mixing is build in, and it's fully programmable with a simple USB converter and the freeware downloadable at Reiners site. Even has options to fit a gyro direct to the board.

Pricetag is about 2 TZ85's.