Mackenzie
Old Brightonian
Chrome.
As a web designer, i use all of them at one point or another.
If we're talking casual browsing, then Chrome on both my mac and PC.
Usually Chrome cos of the bookmark synch but I find it slow and unreliable compared to Firefox, which is currently very robust. however firefox's lack of ability to synch across machines makes it useless
So, what's wrong with IE? Why are so many people so vehement they won't use it?