What lightweight browser runs Youtube can I run on a netbook.

So I'm running Gentoo on my little netbook, 2GB DDR2, and an Intel Atom N450 (Bonnell). I've spent the last three days compiling up Midori, only to find I'm having problems opening twitch and youtube doesn't run videos (no supported formats). I then try NetSurf, and Epiphany (Gentoo still calls Gnome Web that), and still have no luck with either. So I've already got WebKitGTK which took a day and a half to compile up.

So here we go, what lightweight web browser can I compile up and run on this netbook that'll run fast (or not consume much memory), and be able to view youtube videos decently? Or should I bite the bullet and compile up Chromium or Firefox (and which is the faster of the two in that case)?