I have one - wife bought it for me for xmas a few years ago... it's an interesting concept. It really works, you'll need about 60 yards of room to play with. It's cool for me since I live at the bottom of a cul de sac - come March I just put the strike pad on the driveway and hit 6 irons until my hands are too cold 
My 4 year old plays it too.
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Cleveland Launcher Steel 15* NVS 75 S
Bridgestone J33U 21* Aldila NV 85H S
Mizuno MP-60 4-W DGSL S300
Cleveland 588 RTG 51*
Titleist Vokey SM 54*
Titleist Vokey SM 58*
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Titleist ProV1
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