My top 2 choices fall into the OTHER category. My top choices, in order:
~ Prince Tour
~ Slazenger Wimbledon
~ Dunlop Grand Prix
~ Wilson US Open XD
~ Wilson US Open Regular Duty
~ Penn ATP
Have not had the opportunity to use the A-Player, Marathon, or the Babolat FO ball. Of the Championship balls, I'd go with either the Prince or the Dunlop balls. However, the Penn Champs are my first choice on a cold night -- the others feel like rocks and take longer to warm up. Of the premium (pro) balls and the 2nd-tier balls (like the Championship balls), the Wilson Champs are at the bottom of my list.
If u have one foot stuck in yesterday & one foot stuck in tomorrow, u are peeing on today.