I've used Opera in the past but since it went free (no ads) recently I decided to check it out again. I am rather impressed. It has some really nice features and is very quick. Seems as quick if not quicker than Firefox.
Just thought I'd see if anyone else was using it and if they liked it or not.
It's faster than firefox IMO, but I still use firefox most of the time because of AdBlock and the WebDeveloper plugins.
Due to AdBlock, the speed benefit of opera is (non-scientific, and purely subjective opinion) is pretty much negated.
I have to be able to edit-css inline.
Also, I find that I have to manage your user-agent settings quite carefully. Some sites don't play nice at all with opera (my ISP portal/webmail interface will not work with opera at all), and can even make it seem slower because they don't send gzipped data if the client is opera.
I have no java certifications. This makes me a bad programmer. Ignore my post.
I just tried a variety of sites that I know make heavy use of CSS and Opera still falls pretty flat on positioning and support of opacity. But XMLHttpRequest is indeed there. So progress is being made.