I've just gotten the 32gig model of the ATT 1520 to replace my original 16gig model, and I have the option of using a Blackberry Z30. I have used virtually every Blackberry released since their first color screen phones, back in the old trackwheel days. As loyal as I am to Blackberry, I am that hooked on the 1529 screen size. I have been pleasantly surprised by the frequency of app updates with WP, and am looking forward to the 8.1. The size took some getting used to but once I figured out how to get it to work with my car mount, there's been no turning back. I use my 1520 and my Z30 every day, but I use my 1520 much more. It has also cut into my use of my other devices, like my desktop and Surface Pro. There was a lot of initial griping about the 16 versus 32 gig issue, and the size and the lack of wireless charging. I'd get the 32 gig because there seems to be more apps available every day and why not? As for the wireless charging issue, you can get a PMA charging cover from Incipio that does add considerable bulk (I couldn't get over how slim and sleek the 32gig 1520 was with its original case, compared to the charging cover, but that cover does add increased drop protection. A lot of people lost their spit over PMA because they were previously sold on Qi, to the point where they were cannibalizing other cases and grafting Qi elements into their 1520's. But the plain fact is that PMA works fine. I do wish they would release a back cover with the charging plate integrated. I've had no problems with installing apps, dropped calls, wifi, Bluetooth or random reboots. The 1520 is steady, stable and powerful.
Anyone considering a 1520 owes it to themselves to go and see and handle the device. It is that much bigger than other smartphones. But you get used to it. It does sometimes draw comments but really no snickering. When they were first released some people I met were amused by its size but in 2 seconds I could show them an expanded text email, a pdf or a video and they would "get it".