For me it is Opera. I've been using it for years now (I remember it having the ad banner back in the day).
I've used Firefox, Chrome, Safari and many other browsers but I find nothing to be as good as Opera.

I like Opera because it feels lighter and easier than FF.
Maybe that`s just subjective.I don`t know.

Firefox pwns everything else.

Opera owns IMO.

FireFoX makes every other browser look noobsauce

Firefox just has the 'opensource' and 'linux' look and feel to it. It just reminds me of about any program I've ever used in linux. Opera on the other hand looks like a polished piece of software that you'd expect if you paid money for it. And Opera crashes less(never).

like petalx said, firefox pwns i used opera once and didn't like it that much, but that might have been version 7 or 8 or something, it wasn't recently

I have to stick with IE because all - and I mean all - my contacts use it. Perhaps this erudite and learned group are the exception in preferring just about anything other than MS products.......

Well then,show them the way,the truth,and the light.

Whether it be Opera or Firefox is mostly down to personal preference I guess. I use Firefox myself and have done for a number of years.

Whatever your preferences, they are both more secure than IE, which should be avoided like the plague wherever possible.

Regards Howard

Firefox always takes longest to load up it seems, i cant stand that. Opera is light on the eyes, it gets the job done. I.E just blah, too many problems for me.

I use Firefox but... It's using 211 MB of RAM right now, that about sums up what I don't like.

I used firefox for 5 years now...tried Opera...liked speed and interface, but there is still to much that is unsupported...ei plugins...if opera had ff's support and was open source, I would always use it

i've been using firefox for years and happy with it.
though ie7 seems to be great, but firefox 2 come faster in my eyes...

That Firefox open source argument I think only holds water if you use Open Office instead of Microsoft Office. Maybe you just like Firefox better, thats fine, but don't tout it being Open Source as a major reason you are using it if you aren't supporting other open source projects.

hit the nail on the head, as well as opera's lush mouse gestures

Mouse Gestures?

What do you mean by that Jtickner?

Firefox and Mozilla classic... I only use IE for those websites (like some government ones) that aren't FF or Mozilla friendly.

The mouse gestures are a nice little feature Opera has, for instance you hold down the right click button on your mouse and press left click to go back a page, or hold down left click and press right click to go forward a page, there are many more, such as hold down right click and drag the mouse down to open a new tab, or hold down right click and drag the mouse down then right to close a tab. there really good. make browsing a lot quicker and better

jtickner1 - its actually customizable. Or at least the way I use them is different than you. I hold right mouse and just flick my wrist left and that goes back, flick to the right and it goes foward. Those are really the only 2 I use, they get used extensively though. Really sucks to have to use IE or FF because I find myself using mouse gestures and having nothing happen