The Speeder in the titleist woods and drivers is the OEM speeder. The real speeder which I've only hit (757) in the pro shop is completely different in feel. It's a very smooth feeling shaft. I have about 100 mph swing (a tad less than 150 mph ball speed) and I was hitting the 757 stiff with no problem. I would say stiff 757 is a good choice for around that swing speed unless the driver you're looking at is a bore-thru (ie Titleist drivers). Also, I believe the only OEM driver which come with "real" speeders as stock options are the TaylorMade drivers. I've seen 757's in R5, R7, R7 TP and the now discontinued 510 TP. These are going to have TM graphics but by most accounts are the "real" speeders. I asked my clubmaker and he said they are the real deal. I remember there was a mild debate about whether the speeders in the R5/R7 were "real" as they have .350 diameter tips and I believe traditionally Fujikura only made .335 shafts. The 757 now is available in .350 and .335 so that argument is moot. Also remember that more than the stiffness, the speeders are high kick shafts so they're gonna launch real low. I have no problem launching my 9.5 deg driver with my mid kick shaft but I had trouble launching a 9.5 deg w/ the 757 speeder. With my swing speed, that'll probably cost me some distance.