As a developer, Javasscript is pretty much the only way you can get a good user experience on complex interactive websites. Waiting for entire pages to load in response to user interaction is really limiting. I don't cotton much to paranoids that deny themselves any content formatted with javascript.
Opera 10.5 is the best version by far. It is amazingly speedy and unlike Chrome and Safari, the URL bar has a recently visited dropdown similar to Firefox, Internet Explorer.
I have been using Firefox and Opera more lately because IE is so slow and buggy these days. However IE has some better UI features that I miss in other browsers, such as the history / bookmarks bar on the left, the delete button is disabled for the tab that is not currently active, and the way downloaded files are saved to a folder you specify BEFORE each download. I can't stand the way all of the others do it by downloading to some random folder without asking first where to save it, requiring me to remember to move it to a better place later which I sometimes forget. I really don't care for download window either. Some of us are capable of managing our own files and putting them in the right places where we can find them, thank you.