Didn't get a chance to go to the store today, however after thinking about it I think that the 1520 is going to be a bit too cumbersome. Especially during the summer when in shorts, at the beach, or when going out.
I'm going to get a cheap Lumia 520 off contract, just to try out windows phone 8 for a while.
If I like the OS I'll upgrade and get the Lumia 929 when it comes out in January, or I'll get the iPhone 5S as my carrier upgrade if I don't like it. Once I've sold the 520 I should only make a net loss of about 30€, well worth it to let me test drive W8 for a month before making my decision.
The Lumia 929 is also well worth the wait, exact same specs as the 1520 (including 1080p) but on a 5" screen. Seems perfect, especially if I like W8 🙂