Spinfire Premium Box of Balls (18 x 4 Ball Cans)

As Good As Any Other Premium Ball, If Not Better If I had to describe these balls relative to other premium balls, I would say they are between US Opens and Slazenger Hardcourts. They hold pressure well, just as US Opens do, and they are quite fast, but they aren’t as hard as US Opens. They maintain their felt much better than US Open, just as the Slazenger Hardcourt does. Dunlop ATP and Head XT are also premium balls, but they don’t hold their pressure as well, or they lose felt far quicker. Admittedly, they are all good balls, and depending on what you are looking for, they might be appropriate. Regardless, Spinfire Premium are definitely in the same category as all of those other balls in every respect and definitely worth trying if you haven’t.