I use Curse myself.
If you're a safety FREAK, do it by hand, so you can make sure the .zip doesn't have any .exe files or anything like that.
I've heard good things about Wowmatrix, or something similar to that, but there's just no reason for me to switch.
Edit: I passed 3K posts? Lame, and I didn't even make a pandering ding post!
<.<
>.>
I spam too much.
Edited, Jun 11th 2011 7:00pm by jaysgsl