i use gaim here. when i used windows i tried trillian for a while, i got sick of having to DL an updated version every day so i went back to the original clients
been using trillian pro 2.0 beta for a few weeks now.....pretty happy with it.
Hated having more than one buddy list window open and I can do much more with just trillian (weather, email, headlines, etc) than I could using any one of the four (AIM, ICQ, MSN, Y!).
i use AIM to talk on; MSN messenger to inform me of my emails.
there are only three icons in my systray... those, and the little one that means i need to update things on my comp. so there should be just two.
i tried trillian once... it didnt save my blocks, so it let people i'd had blocked message/harass me again.
so i kicked it to the kerb.