iPod Touch?

I've been thinking about getting an iPod Touch for my bday, but I'm not sure... My first option was to get a PSP xD But a lot of my friends said that it sucks, so , I was like "well, I might get an iPhone then..." That's when someone told me that I have to get a contract with At&t and... hell no I don't want that haha, I like t-mobile and besides... I bought a $200 cellphone a couple of months ago anyways...
So then someone suggested to get an iPod Touch, I did some research and it looks great, it is pretty much like an iPhone... the only thing is that it is obviously not a phone.
I am still uncertain about this, I don't know what other things I could want for my bday, there's honestly nothing I really want. :P