personally i have used aim, deadaim, gaim, and trillian, out of all of them, aim + deadaim is the best for full access and use among your aim friends, i dont talk to anyone outside aim soo thats why its the best for me, however for style and fun and custumization i would go with gaim and folllowed by trillian, trillian i dont like so much, while gaim kicks ass for windows, yet it has one major problem, it is updated every few weeks which is great to see people caring about open source programs it lacks file transfer or at least i have not been able to accomplish such a task, once gaim gets file transfer it is by far better then aim.... aim for me never gives me any problems its just the thought of trusting microsoft aol programs yuckkkk