I read through a bunch of threads about it awhile ago, but the results seemed mixed, and it's a bigger investment than I've wanted to get into. CE2s are pretty cheap.
I take it you haven't tried it, either.
The $$$ is what hold me back also.
I've fond el-Cheap-O brands of Ultra-Sonic Cleaners on amazon/e-Bay but the reviews are horrible. Seems like you have to pay decent money to get a good one and I just not ready to shell out 75 bucks or so just for something to clean CE2's.