I've been impressed by IE7 so far. However it doesn't come with a spell check which is a major drawback and there is at the time of writing a more limited  number of plugins available than Firefox users have access to. 

For whatever reason, maybe startup speed,  I still tend to use IE more than Firefox although the latter is the better browser. 

Because IE7 doesn't have a spell check I downloaded and installed iespell.  It sounded promising although I rather unwisely did not read the manual. Unfortunately as soon as I started to use it in this installation of Joomla it quickly became apparent that the rich text editor did not work anymore and the page now reports as having errors. I'll have to look into these. Even worse when I uninstalled it the errors continued. Maybe I'll have to read the manual and maybe use system restore. 

I'd recommend staying away from iespell for a while.