I just switched to Miranda as my client just a week ago, i'm very very happy with it so far, just when you first get it I think it's a bit hard to get used to, but once you sift through the hundreds of plugins you'll find some great stuff!
============== One day a man walked into a bar. Ouch. Visit me at please!
Seriously, Miranda is awesome, GAIM is okay too, but Miranda is so nice.
-- If you look at a tree as simply being a tree then that's what you will see, if you look at a tree as being just another tree in front or behind the other trees in the forest, then you will see the entire forest