I was interested to see that James Willstrop looks to be playing with the Prince EXO3 Pro Tour Squash Racquet at this years' British Open.  James is a Prince sponsored player of course so playing with Prince makes sense but he has been switching back and forth between racquets.  I have seen him playing with the Prince EXO3 Rebel, an old Prince Speedport and now the Prince EXO3 Pro Tour recently.  The Pro Tour is a little heavier than the Rebel but is slightly head light where the Rebel is head heavy.