I'd wait, new iPhone will probably be more desirable than new one and you'll be disappointed every time you look at your obsolete 3G iPhone. Having said that I loved my current and original iPhone, and you might be happy with the 3G iphone. I'd still wait though.
To some of the other repliers- why bother to give the OP a hard time for asking a question that he'd like help with? If you find these threads boring / irritating / annoying etc. ignore them. Post on a thread worthy of your attention and time.
To some of the other repliers- why bother to give the OP a hard time for asking a question that he'd like help with? If you find these threads boring / irritating / annoying etc. ignore them. Post on a thread worthy of your attention and time.