On linux I ditched Chrome in favor of Firefox a couple of months ago and haven't looked back since. The memory usage of Chrome was awful, and especially (as far as I could work out) when having javascript heavy sites open. If I had Facebook open in a tab on Chrome, even just idle for well over 16 hours a day, I had to restart the browser every 2 or 3 days because it was slowing my computer to a crawl. With Firefox I have never had this much of an issue; sure I have to restart maybe once a month but I can live with that, especially when my memory usage dropped by almost 1 Gb aswell with no noticeably effect on responsiveness of the browser.
On Windows (my work computer) I use Chrome, I haven't noticed the memoryeating by Chrome on Windows so far and I won't fix what ain't broken.
