The best p2p client (well maybe not the best) but the one i use the most is ares,
to me iz so easy to use, i get good download speeds and it also has a place where you can chat.

Its really easy to use and all your filez go directey into the library and it comes with a music player.
and itz own web browser

itz all i use now

www.aresgalaxy.sorceforge.com

First of all, your link is blatantly wrong. Second, Ares does not use Gnutella at all. It isn't even really open source as it claims to be.

what is open source mean