Chrome vs. Firefox
I've been playing around with Chrome for a few days now, and I can simply say this -- while there are a few things that don't quite work perfectly (it, like most Google products, is still in Beta) -- it seems to replicate most of what I like about Firefox.
And my biggest complaint about Firefox is, of course, that it's a huge memory suck. I've been opening up identical tabs on each browser and then checking the performance occasionally, and Firefox is consistently using anywhere from three to four times as much memory. That's tangible, and Chrome so far is a huge winner in what I consider perhaps the biggest flaw of Firefox.