If things are going to be so "truly amazing" with your Galaxy Nexus which you say "ends it all", why then do you have your next upgrade already planned? And for whatever it's worth, browsing the web on a phone blows, whether its a 4.3 inch screen or 3.5. Get real.
It does blow. Then of course everything else can be done on PC much more efficiently. But if you need/have to browse web on a phone, iPhone is not a very good option.