Firefox here, for the plugins. Chrome is overrated.
That is my position as well. I use Firefox for its vast array of extensions. The release candidate of Firefox 4 is already running smoothly on my desktop.
Quite. I tried Chrome but found a few major issues...
1) Only supports 1 search engine (In Firefox, I hit Ctrl-Up/Down and can switch between searching Google, Wikipedia, etc.)
2) Doesn't handle Live Bookmarks (and the add-ons that do don't really support syncing)
3) Takes up 3x as much space on the HDD as Firefox (which is an issue on my netbook)
4) Download manager is whacky
5) Doesn't support many add-ons or doesn't have an equivalent (like DownThemAll)