I prefer the IC2 miners myself. With a normal drill, they are quite energy efficient, but slow. Using a diamond drill, they run through a lot of energy. I counted it once, and it came out to around 900,000 eu. A GT thermal generator can keep up with it though. So it is a lot easier to setup now. You have to move them frequently. I've heard of people attaching IC2 miners to frame platforms for moving the setup around, but I've never seen a picture or video of it.