I bought an extra gig of RAM to cope with my browsing habits using Firefox. Currently flock-bin is using 119MB resident memory which isn’t bad. I’ll report back at the end of the day after the browser has been open for a few hours.
One peeve I have with it is that each tab has a close button. This takes up too much room when you have a dozen tabs open. Looks like there’s a hack to stop that behaviour. Must try that.