Pro will not make a vastly dramatic improvment. You should really look at ways to improve what you have, but remember that you can have the fastest connection in the world, but your speed will be governed by the slower user at the other end. A lot of the downloads I get come in around 7kb/s and for big files that can be frustrating. ..... so .... I live by my motto
Check this link out ... it may help:
http://www.gnutellaforums.com/showth...threadid=27036