Re: The bitter taste-
"Firefox uses less memory than Chrome"
It's not that that actually gets in my face - I installed more memory in this machine just to make my multiple firefoxes with different profiles, each with many many tabs, usable for more than a couple of hours.
The problem is the hitching. Every couple of se... conds it sto..ps doing anythi....ng which can to...tally ruin your typ...ing, scrolling, and means clicks m...ay not go where you thought.
Amusingly, one of the things that used to *seriously* hitch the browser were those HP countdown adverts in the Reg sidebars :) I'd had to delete the ad's node if I wanted to scroll smoothly.
When I dug into the issue it only affects people like me who have a squillion active tabs for very long periods of time. It's something to do with the structure it uses to track objects getting unbalanced because of something they didn't realise they should have been tracking to keep it in balance. A firefox engineer going "Oh. Hrm. Hrrrrrrrrm. Ew." was where I saw the bug investigation last.