Should I continue to use Firefox?

I just updated to the newest version of Firefox. I had some issues with the update and couldn’t figure out a way out of the mess I had made, so I dumped the whole thing. I am ready to start over. Should I reinstall Firefox or is there something better out there?
I am not techno savvy at all. I need simple, familiar, fast and reliable. I have windows7 64bit whatever that means.
What do you suggest for me?