I have both rottendog power and dmd boards in WH2O.
Purchased them as intermediate fixes until I got around to doing the repairs/component replacements on the boards.
dmd board has been running since August with no problems and a couple hundred plays.
The power driver board was installed towards the end of November.
I read some people complain about buzzing through the speakers for certain games where the power driver board was installed. I do not have this issue on my WH2O.