the power drop is a good rest, I think it is more of a specialty rest that either appeals to you or not. A lot of shooter are eating up the new TKO, which I honestly like better.
I' ve been shooting one for a couple of months now. No problems. It is definitely more accurate than I am. The only thing you have to do with it is keep some light oil on the push rod. I have only had to oil mine once since I bought it.