All good reasons, except IE. That simply isn't true anymore. This review puts IE on par with Opera. http://internet-browser-review.toptenreviews.com/

I wouldn't expect Google to fix the DDE issue in Chrome as DDE is almost never used anymore.

>Chrome - 2 reasons - (1) I remember some clients I have having problems with Chrome and some other apps they were running AND (2) Chrome has an (still unresolved to my knowledge) issue with other applications that make use of DDE. The DDE server must be started first before any Chrome browser is loaded in order to get around it. I have no idea why this affects the DDE app.
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>IE - I don't want to use the browser which is synonymous with the phrase security hole :) Mainly its because I gave up on IE years ago and just never looked back. It gained a rep for being the least secure browser - reps die hard.
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>Opera - Because I have heard many other people speak well of it including on this forum.
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>FireFox - Because it gained a rep for being the most secure browser.