I’ve been using Waterfox 64 bit browser for a few months now. Seems ok but I noticed it will not let you checkout at Amazon.com. You can sign into your account but cannot complete the checkout process. Firefox Portable was what I used part time prior to Waterfox. Of course Chrome seems to be my goto browser.
I have several different browsers, and they each have their quirks.
I use IE9 occasionally — my bank’s tunnel security software does work with it. But, I can’t download bank statements, etc., because IE9 doesn’t seem to know how to download PDF files.
It is rather frustrating to have a different browser for different occasions.
Hmm, I have been using Waterfox for probably a year with no problems. Amazon works perfectly.
The only thing I can’t do is reliably log into my work’s remote email.
Regarding the current Firefox, I had to email the developer of the "Save As" plugin because it stopped working one night and he told me it was due to Firefox changing the code. I got an updated version but now I'm thinking of going back towards FF 12 or 13.