I have the Pro Putt Sytem 15’7” x 5’9” model and love it. I rolls right around a 10 Stimp which is a bit slower than the greens at my club but it’s fast enough. They are expensive but not much more than our ping pong table and with my daughter who is an avid high school golfer the putting green gets used a lot, 5+ days a week during our long winters. I have one side of it slightly elevated for breaking putts.