After all the talk about the SLDR, I wanted to compare my R1 to the SLDR. After warming up, I had my turn on the swing monitor and produced what I thought were some good numbers. According to the TaylorMade rep's machine, I was swinging it 101-102mph, had 15.5* of launch and a spin rate of 2100 - WITH MY R1! After seeing those numbers, I didn't even bother to swing the SLDR. Rep said my numbers couldn't get better. Feeling good.
That afternoon, I had a lesson. I pulled my R1 out and was hitting bombs for my instructor. He uses Trackman. I do not recall the name of device the TaylorMade rep used. So, I checked my numbers and WOW - swing speed was 94mph, launch was consistent at 15 - 16*, but spin rate jumped to 3500! What/who to trust? I'm leaning towards believing Trackman.