dunno about the PC version, but the Mac version has its ups and downs. While it IS a really handy and automated app, its kind of unstable in my experience, especially copying to two drives. It also isn't updated very regularly, and I'm not sure how much the programmers listen to feedback on their forums. Then again, at $33, its not too bad of a gamble.
For the price its awesome on the PC side as far as I'm concerned. I use it exclusively for transferring footage and have yet to have a problem with at least a few hundred transfers.