Well, IE has been ancient history as far as I'm concerned for a very long time. Just terrible in every respect. Hard to imagine how they managed to make it so bad.
Have been using Firefox for many years, however that has changed, as I found a browser that allows me to post on all the political and "Discus" sites that I have been banned from...
It's called Comodo Ice Dragon. It runs on the Firefox engine, and has all the functionality of Firefox, including the use of all extensions and addons, combined with the security of Comodo, their browser based on the Chrome engine. Ice Dragon is faster than Firefox and much more secure. It has a "Siteinspector" system that integrates malware detection into the browser, scanning the site before you visit. "Once the scan is finished, you are given a full report of the site's safety, domain registration details, administration contacts and a history of all malicious scans that have been performed on the website."
The single best feature for me is the ability to go through their secure DNS servers, rather than your ISP. This allows for faster page loads, and what amounts to a free VPN (virtual private network) built in.
I am now able to post on sites that I have been banned from, namely political sites, where political correctness is more important than free speech. Think "Disqus" and the likes.