I find Version 1.5 to be stable and, with the addition of extensions and Greasemonkey scripts, very configurable. Integrated RSS functionality is a top priority for Version 2. If implemented well, that will be very useful.
Without some radical move, like going open source, I don’t see how Microsoft can keep up with Firefox in the implemention race. I was originally pulling for Firefox to make a dent in the browser market in order to create competition. Now I’m pulling for Internet Explorer to stay in the game for the same reason.
Interesting times for internet users. As long as both products stay in the game, the users win.