Quote: "The multi-threading/-processes is a sweet idea"
It's about time! I've been wondering for years why nobody has done this yet. It will likely use more memory, but I have enough anyway and think it's a good trade-off.
Right now, I still mainly use IE6 just from habit but Opera 9 is my favorite browser.
Quote: "The lag between opening a new tab and actually seeing it is quite unbearable"
At least when I click on the IE icon the browser actually opens immediately, unlike FF. Before you call me an MS fanboy, I hate IE7 with a passion. But it's been my experience that IE6 has always been faster and more memory efficient than FF. I have yet to install FF3, so things may have changed.
Quote: "I'm all Safari. However, I may try this."
I think I read Chrome uses Apple's Webkit for the HTML rendering.