Chrome and Firefox

I was a Firefox user for a long time. A while ago I switch to Chrome, and there's a few features I like about it. The feature I really like is you can drag out a tab and it becomes another window. You can also drag a tab from one window and attach it to another Chrome window.
This is particularly useful when I have two monitors, and when I'm watching a video on one of the monitors and working on the other. But there's still one thing Chrome bothers me -- I couldn't open PDF files in Chrome. It has bothered me for a while, and I finally decided to look for answers on the Internet.
It turns out quite easy to solve. Here's a Google Chrome page that talks about this issue. Copying the dll file and paste it in the Plugins directory works for me!

Now I can keep Chrome and not switching back to Firefox. :-)

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By the way, I would to switch back to Firefox if it also has the tab-dragging functionality. I just tried out Firefox 3.5. There is a similar functionality -- you can drag a tab out and it will become another window. However, it doesn't work as smoothly as Chrome, and also the content of the tab will be reloaded, which is not desirable when I'm watching a video in that tab...