I have found the Doom to be a FANTASTIC ball for medium AND drier conditions. I would say it would probably end up a bit below the Agent, but my guess is once you saw the ball in action you'd rarely bring the Agent out of the bag.
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This ball has great control coupled with amazing power. Since acquiring mine, my average is up 28 pins. (I still have a lot to learn, and it's not all the Doom that bumping my average, but it is a big part of it!) Since I got the ball, I've been using it on every condition I see aside from the heavier stuff. Heck, I even sold half my arsenal because I don't need it anymore!
As far as drilling goes, I'm not the most knowledgeable sod in this area. I would use a strong drilling on the ball, since you describe yourself as speed dominant. Mine has a basic label leverage drill and I can use it in a LOT of different situations. Good luck!