US readers, who is your wireless carrier?

It's a pretty interesting time to be a smartphone user in the US. No, I'm not talking about the devices themselves being interesting — although, depending on your thoughts surrounding slimness, it sounds like it's about to be a particularly interesting time. Instead, the real war for your wallet right now belongs to the carriers, as the big three titans continue to battle it out alongside — and against — their respective collections of MVNOs.