There's still the issue of Chrome's addons not being as powerful as Firefox's. I dearly want to switch to Chrome (or ium), but I've grown quite attached to the Tree Style Tabs addon, and I've found the attempts to replicate that functionality in Chrome somewhat lacking. The speed difference is absolutely huge though. It's like opening MS Word vs Notepad: Chrome is just there, but Firefox takes at least a few seconds to open up, even without (m)any addons