Heavy rackets are more enjoyable to play with, but they slow me down from running. I like small frames because it's easier to manuever, but you have to focus more. I would say i play better with my former OS106' racket, but i enjoy playing more with my Nblade98. In this case, size doesnt matter. Dont wrry about the others. Smaller frames will develop your strokes and timing because the margin of error is slimmer.
Proud owner of a Nblade98 58/57lbs Goosen ProTuff15
A member of Cashcrate :] http://cashcrate.com/441163