I demo'ed the white Taylormade RBZ 10.5
I tried both stiff and regular flex.
I also was hitting a Ping G15 and that old Cleveland driver.
The Taylormade RBZ stiff shaft was unreal. Massive head. I felt I could not miss.
If you can only drive 200 yards, you are a long way from a stiff shaft and only hurting your drives by getting one.