Originally posted by ndmmxiaomayi:
I guess it's really dependent on systems... Firefox is faster on a slow machine, whereas Opera is faster on a fast machine. But then again, I love tweaking, anything close-sourced doesn't allow me to fiddle around too much... so not my favourite.
Hmm...I think Opera would be faster in both cases. In my experience, Firefox took up over hundreds MB of RAM after running for a few hours with 10+ tabs on, but that wasn't the case for Opera. Opera seems to limit itself to a certain amount of RAM (below 150 at almost all times), no matter how many tabs (within a reasonable number, obviously) were on or how long it has been running for, without any noticable drop in performance.
And regarding tweaking, Opera does have a "opera:config" page for users to change advanced settings.
Besides, Opera is the only mainstream web browser on the Windows platform that
passes the Acid2 test. For me, it is quite an important feature as I often have to deal with CSS code (briefly, CSS handles the alignment of elements in a web page) and having a browser that can render CSS accurately would save me unnecessary time on "debugging" code that wasn't even wrong in the first place. And from there, I work on fixes for IE and FF based on the CSS code that renders correctly in Opera.
But of course, Firefox has its strong points as well. For the first part, FF renders CSS code correctly for 99% of the time. It has a wide library of user-contributed addons, some which are useful for web development (Tamper Data, Web Developer's Toolbar etc), and some that make NSFW sites "legal" during work (credits to Adblock Plus). And the upcoming FF3 (or Fx3, according to the official abbreviation) is able to pass the Acid2 test as well. So, if FF3 is more efficient in memory handling than its predecessor, I may consider a switch in the future. But for now, Opera - FTW.
Well, the above points may be irrelevant to you at all. At the end of the day, I guess it all boils down to what you are using the browser for. If you are one who just surfs the net and enjoy skinning your browser plus those "Today's Weather" add-ons, go with the fox. But if you are a speed-hungry minimalist, get Opera on your side. Nevertheless, our dear old IE is still usable if you don't really spend much time on the web or you surf mainly IE-only websites.
And that's - my 2 cents. =D