I had a Clutch Pearl and it's fairly strong downlane. I have a Sure Thing and love it and I've been looking at a Wisdom R/S for the control. I bowled a tournament with a guy that was using the R/S and had an awesome reaction when the lanes broke down and opened up! Go for the Wisdom R/S!!! Just my $.02, Bruce
P.S.
On edit! It's not that I didn't like the Clutch Pearl, I really liked it, but I think the Wisom R/S will compliment the Sure Thing much better, more seperation between the two and not overlapping to much!!