Browser Wars, Internet explorer 7 Vs Firefox 2

I have been trying both of these browsers for a while now

Firefox

- New integrated spell checker is excellent, its like the MS Word one and
works by highlighting words for correction with red underline squiggle
- List of firefox add-ins (extensions) is still far superior to that of IE
- Integrated adblock support, still need to get filtersetG extension
- Still prefer the download manager support to IEs

Internet Explorer

- When a window pops up it gives the URL of the new popup, this is great for
security because you can see if its coming from the same site but also very
handy for development to see QueryString parameters etc that are usually
hidden
- New printing and print preview functionality allows you to graphically
change margins etc by dragging arrows
- Tabbing support is great, need to configure defaults to have all new
windows appearing as tabs of the 1 instance of IE though.
- Quick Tabs gives you a preview of the pages in each tab. Very nice,
especially for large numbers of tabs, this is available through Firefox
extension but its in IE by default.
- I don't like the way the refresh and stop buttons have been pushed to the
right away from the back/next buttons, seems counter intuitive
- RSS Feeds are now supported in favourites but seems to only pick up ATOM
feeds, have had a few problems subscribing to RSS feeds saying that they are
not supported