Yeah I feel the same way...for the first time the iPhone is just about perfect! No more key features are missing. Now the only thing I could really ask for is a better battery, but I'll ALWAYS ask for that, so that doesn't count as a complaint in my book .i think it is definitely a worthy upgrade. For the first time I'm (almost) completely happy with my iPhone. It's not longer a love/hate relationship.
MMS when it is available will enhance it even more. If Apple ever adds multitasking abilities it will be the perfect phone.