Phone dilemma (IPhone, Android, Blackberry)

So my phone account is finally up this month and I am going back to my smartphone ways. I miss them. I use to carry around a treo and before that a palm pilote along with a cell phone, but the last time I had a Palm Treo, I ended up breaking like 3 of them and got tired of buying more of them. Plus it had trouble correctly synching up to my computer, which annoyed me. Needless to say, smartphones have come a long way since.

However, I don't know which way to go. I've read many articles comparing them. I actually think I would like the business aspects of the Blackberry. But I'm afraid that my desire for apps through the Apple store for Iphones will be too great. I think that any phone would be ok as long as there is an open development network, which Iphones seem to have (thousands of apps). However, I've actually heard that their development is very complex and not very open. I think that the developers are having trouble because the language closely resembles something like C (which I'm personally better with) then Java. But Java is what many people learn and develope with, well, not nec. java, but higher level languages as oppose to C, which you still "touch" memory, etc.

I have heard AT&T is difficult to get reception compared to Verizon. I live near Philly now, so i don't think it'll be much of a problem. It was more when I was out in the boonies of lower Delaware that people had a problem.

Anyway, I like the idea of andriod and think google will become a frontrunner past Iphones in the next few years, but I don't know/see them there yet. I need some advice. Help me pick a phone. I will be stuck with this phone for 2 years after all....