". IE doesn't even offer a simple ad blocker, such as Adblock "
I seem to have a good compromise with IE/Firefox. Truth is, I can not discern any difference, of consequence, between the two. As some know, Microsoft, up to (?) about 6 months ago, restricted entry to some of their pages to the sole use of IE. This ran into immense difficulties with their own frequent users. During that period, I guess I got over familiar with the use of IE, and now prefer it as my default.
It seems to be little advertised, but, fwiw, IE8 is the first browser to have a built in Ad blocker. - The "in private browsing" filter. It does precisely the same as the firefox adblock add-on and is customisable.
I'm lazy. Another useful feature I find is, that through automatic updates, IE8 can receive quite a few improvements. I have received four security updates to IE since the final Windows 7 release. In contrast, I have become bored with downloading and installing new releases of FF
For the sceptics, here is an interesting comment.
http://www.kuro5hin.org/story/2009/12/14/121912/21