As the title suggests...

What browser are you using? And what are the plus points versus IE7(default)

For instance I have issues with IE7 on my bedroom pc (wi-fi N) - it hangs really bad! But Firefox has no such issues, i really wanted to switch back to IE7, now i have a copy of Adobe Acrobat pro - very handy for invoices if you buy online alot

EDIT: I voted Firefox 3 for the above reason