Adjustability aside, how does the new 913D3 compare with the 909D3? I have the 10.5 909D3 with the Aldila VooDoo S-Flex. I've been happy with the club but I'm curious about what the difference might be. My driver swing speed is about 103 but I hear people comment from time to time about how much they see the shaft bow in my transition, thinking it's an R-Flex. Comments like that make me wonder the VooDoo is the right shaft for me since there were no others available to try when I bought the club. Also, how do the 913F3 models compare with the 909F3?