AT&T sucks but can I give up the iPhone?

I have an iPhone...I ran out and got it three days after they came out, and yes it's sexy, it still makes me think it's the best phone out there but there's one problem, AT&T sucks!

With my iPhone I do the following on a regular basis:

1: Listen to music

2: Make calls (obviously)

3: Use the visual voice mail

4: Automatically synch my calendar with my laptop

5: Text messages

6: Check my stocks

7: Check the weather, (at the moment I track weather in 10 cities around the world)

8: Check Facebook

9: I have 28 "apps" on the phone, from games to Bloomberg finance

I0: I have thousands of photos on the phone, some from my laptop and most taken on the phone.

11: Surf the web

12: Watch TV shows

13: Check maps, especially in NY

14: Use the alarm

15: I keep notes

16:Synch my contacts with my laptop

What I don't do on the iPhone... watch You Tube videos, or mail, the mail sucks on the iPhone, I have a Blackberry just for that.

So can I give up the 16 above points to replace the crappy AT&T service?  I repeatedly get dropped calls, bad lines, late voice mails, or no service at all.  Verizon is much better in my opinion as a network.

I'm on the fence...I love my iPhone but is there a better option out there????