The Polished Urethane Groove would be a great piece for the dry. I like to use it in dry lane stuff and only notice a lack of hit when pulled into the oil. Even then, I am still able to throw a few messangers on the soft 7s it leaves. This ball allows you to over hit it and not watch it over-react. The ball is also very smooth and for just a three piece it does get into a roll quickly. I drilled this ball up as a spare ball, but it has become my favorite ball in my bag that consit of a T-Road Solid, 2 TNVs, and Equation. My first game using this ball was 300 in practice and then over the weekend I used it to qualify for my local association masters tournament on a Cheetah pattern. I got mine off ebay for $10.50 and I believe there is still a few more on there.
Good luck in your choice.