Would You Switch? (Please at&t costumers only!)

I know that there is verizon talk constantly going on on this thread.. so this thread is just, "in theory." But if the 4th Gen iPhone were to debut on verizon & at&t next summer would you be inclined to switch over to verizon or stay with at&t?
I feel this is a question many of us will have to answer if this becomes a reality, because all of the 3G costumer's contracts will then be over, without the incentive of a 3G S to renew up.
I for one am becoming a little peeved when it comes to my service with at&t... I am constantly having dropped calls (in downtown chicago mind you) when I have full bars... I have had periodical issues with my text.. on top of a few other issues. On top of that all of my friends and family are on verizon... so I might see the incentive to switch. I didn't like verizon when I had them, but I am having some real issue with the at&t service along with the way that they have been treating one of their largest groups and handicapping one of their best selling products in history.
So who would consider it?