Opera mostly and Safari for the sites that are buggy with Opera. I use both a PC and a Mac and Opera works the same in both.
I have pretty bad eye-sight and like just hitting the ‘9’ or ‘0’ key to decrease or increase the magnification. I also like the ‘z’ ‘x’ key for back and forward in a browser tab.
Opera, mostly. Safari or Firefox when a page is not rendered properly in Opera. One of Opera’s better features is the Author Mode, which will strip pages of colors, formatting, etc… I use this when I come across pages that are difficult to read due to bad combinations of background/font color and other things that make reading (to my eye) difficult. Opera also allows me to stick the address bar and tabs at the bottom (Firefox allows the tabs to move from the top, but I don’t the address bar can be moved). Plus, Opera on both Mac and Windows loads most pages faster than any other browser.
Following.
mangeorge