I use IE9, I actually prefer it, I used to use Chrome, tried Firefox. I know the in thing to do is to make fun of IE and show how cool you are by pointing out you use a non-MS browser, but not being in the cool club is just something I'll just have to live with.
IE9 has zero problems with the site for me. Video loaded in a few seconds, the page pops right up, etc. It does look a bit 'busy' for me, but from a functional standpoint it works fine on my computer with IE9.