Just got my first test balls last week. These are the best titleist ball I've tried. Very stable into and down wind. Also tried them around the green and my stats show that I've improved on the short game. Temp 3 degrees and lost only 10 yards carry from 15 degrees.Sound nice off the club also. Think they may be velocity or in between velocity and prov1. They may be prov with new shell. (Rio aged 10 handicap 9)