If you can't find the clear gas mask, I'd suggest the Taboo Spare. I've been in a slump due to drier lanes, and decided that I was going Urethane. Money wasn't there so, out of frustration, threw my Taboo Spare. My eyes lit up when I got the most predictable shot, and have been throwing it even on the fresh at the center I bowl at. Start off slow, up speed, and barely ever have to move left.
That, and it hits just as hard as the top-end stuff when it hits. Officially the best ball in my bag for the center I bowl at.
At least for the way I bowl, with 350-400 RPM.