strange, I've read the whole thread but nobody even mentiones the primary difference (well, that may just be as I see it) to other browsers: process separation
thats what impresses me the most. I'm so sick of losing my work (browser based support ticketing system at work) just because one singe tab has a problem and causes the whole fox to lie down and die 
I really loved the idea that every window, even every tab is a process of its own, completely independent. of course thats also quite a nice touch regarding security.
but apart from that I can't really see any real advantages to ff. speed? thats mostly a problem of JS devs, good & clean JS doesn't take long. believe me, even not so good & clean js can run extremely fast. I've once done something rather strange with js just for the fun of it. js loads, contacts a server by xmlrpc, gets JSON data from server and builds the complete html-dom from that - a complete page with tables, lists, texts, and so on.. and even though I'm not really good at js and I've never spent a minute optimizing it, it works amazingly fast so IF a page really is slow in FF, it probably just is the devs fault and working at a daily base with webdesigners/webprogrammers I can assure you. most of them have no idea about their work. the just fiddle around until it more or less does what it should. I've encountered only a handfull who really knew what they were doing (ok, to give the webdesigners credit: they were trying to do a webprogrammers jobs, because their customer didn't want to pay the expensive programmer.. but still *g*)
biggest con for chrome: (apart from no linux-version available currently): you can't use all the great FF add-ons.. for me, thats what makes the fox so irreplaceable. foxmarks, firebug, html tidy, easy gestures.. I couldn't live without even one of those plugins anymore. If, however, google would be able to support the exact same plugins without modification... then I'd switch in a heartbeat. (and probably switch back soon because of the lack of something else I didn't think of.. *g*)
ora
btw @Himangshu: try out PlayOnLinux. its a toolset to install games & apps with wine (configures wineprefix and so on).. google chrome is installable easyily with it. and it works surprisingly good. its not the same as a real linux-chromium, but its a start
