Only balancer I've seen the balancing disch rate quoted for is an Astro Blinky basically cause it's low. I don't know what these typically disch at, but the Hyperion LBA-10 has the highest charge thru rate (10a) and it will operate in standalone mode as well. It would allow use of your Hyperion adapter boards.
http://www.allerc.com/hyperion-eos-l...0a-p-2916.html
Since this balancer has the highest charge thru, it may have the highest disch as well, but I don't know that for sure.