IE 7 is very very sluggish. Even switching between the tabs produces a serious time-lag. When it comes to the looks department, IE 7 wins hands-down. However, there's more to a product than just looks, and this is where IE 7 falters. There's also a peculiar problem when blogging via Blogger: the typed letters just don't show up on the screen! Yet, when you publish and view the post, it's there!
Firefox appears a lot niftier but loses out on the looks front. If only it got a bigger push from the corporates!