Saint, Onge South Dakota we have long winters so try my best to putt on carpet or a small mat I have. Been looking at something to make the long winters not so long between golfing. I haven’t had but one roll up one and have been looking at a birdie ball for a while but haven’t pulled the trigger. I would do the medium. Most of our greens around here roll about that. Would love one with cups on both sides and probably in the 10-12 foot range.