Anybody have any comments on the Wilson Six-Two(either Ncode or Kfactor)? I'm a 3.0-3.5 mostly doubles player currently using the Prince Original Shark. I hit with the 6.2 for a few short minutes yesterday and it felt good serving and most groundstrokes, that's all the time I had left to play. I think it is about 1/2oz lighter than the Shark. I was looking for something that would help me to get around quicker on my strokes. Also, how would it rate with comfort, etc. Thanks for any help.