I have 3 that I take to the practice green once a month to battle for supremacy. They all get their chance with lag putts, 8, 6, and 4 footers. Last months winner was the Ping Craz-e-r. The other 2 that performed close to as well is Bobby Grace F-18 and Rife Aussie mallet. My Ping Oslo Vault and SeeMore Si4 have not been performing well and rarely compete against the other 3.