Apple iPhone 3G

So, I have a dilemma, I'm in NJ and for the past year I've been using my BB Curve without incident for personal & business. I now have the opportunity to upgrade and was considering the iphone 8g 3G, but I'm concerned about dropping calls and it's e-mail capability.

I love the features but don't want to get something that I may regret. Any feedback from NJ iphone users is greatly appreciated.