I've been using Google Chrome since it game out and I really like it.
I like how you can drag the tabs around easily and create a new window by just dragging the tab off the window.
I like how each tab is run in it's own process.
I like the performance.
I find the user interface a little unconventional but it works. The simplicity of it is really nice.
I like the search at the top vs at the bottom like Firefox.