Opera can suck memory, too …
by Jeremy on Feb.04, 2008, under General Ramblings
Opera can suck up its fair share of memory, too. Take a look:

But, let me show you why it’s still better than Firefox:

It garbage collects properly like just about every other Windows application on the freaking planet when minimized.
February 5th, 2008 on 4:07 pm
Although Firefox doesn’t incorporate this automatically, it can be done. I have a feeling they don’t do it automatically simply because it’s built for multiple OSs, but I really have no clue. Regardless, do a search on “config.trim_on_minimize” and you should find plenty of results.
Either way, it seems you’re happy with Opera.
To each their own.