This thread started off by asking about the Cleveland Comp 460, and I tried that out at an indoor simulator at Golf Galaxy the other day. I hit it pretty good, but incredibly high, even with the crappy, stubby tee in the mat. The salesperson tried to explain that this driver is supposed to hit it higher than any of the others. When I asked him something about optimum launch angles, he didn't really have a response, I guess he was just feeding me the line he got from Cleveland. I agree, it looks good behind the ball.
In terms of being able to work the ball with the large drivers, I agree, it is next to impossible. Also, I was watching a "Playing Lessons from the Pros", months ago, with Paul Casey. He said that he recently began driving the ball much better because he had given up on working the ball with his driver and just bombing away.