Which browser do you use for Zoho?

Which browser do you use for Zoho?

I use Firefox as my main browser, but I have added extensions and other configurations that cause some trouble with Zoho. For the last couple of years I've used Opera as my secondary browser and used it for things like Zoho and other webapps that I want to be open and stable all the time, but recently the old version of Opera (12.16) has started to not be as stable, and it seems to have problems in particular with Zoho.  The new version of Opera works better with Zoho, but is missing a bunch of features still.

The last few weeks I've been using IE.  I really like the fact that I can pin Zoho to the taskbar just like any other application, and I find that I'm much more likely to keep up with Zoho updates now.  But there seem to be some bugs (most noticeable is that for almost any field I'm trying to edit I have to click save twice, the first time it is on the same line as the field I'm editing, and then after I click that it moves down to right below the field I'm editing, and then it actually saves).  Also my phone system has an addon that lets me click on a number to dial it, but that is not supported in IE.

So what browser do you use for Zoho and why?