A Perfect device for me.
Pros
Size, Speed, OS
Cons
nothing comes to mind.
Summary
I have been using this phone since late last year, I love it. I make my living with the phone and it has not failed me in anyway. The huge screen makes my iphone friends envious . I have not noted a lack of apps but I am older so some apps I would have no interest in, however, I compared the app store with an Apple friend of mine and yes apple had more apps we could not find a needed app both phones could not get from each our prospective stores. The phone has plenty of space for my music especially since I added a 64 Micro SD card. The zune software made much needed improvements for adding music to the phone( X box music). Camera is 20 mp and is excellent, the os makes posting pics on FB one click. Battery life lasts the day easily and I have been a windows mobile user for a few years now I am loving the OS more and more as each update comes in. The address book is by far the best I have seen from any os. Its connection with FB makes it quick to get caught up with a persons life and I dont miss birthdays anymore.  Great phone that help keeps my world connected.
I think when I get my new OS update, Cortana will make this phone unbeatable.
Quick update, I got the 8.1 update a few weeks ago and I am very impressed, it has changed a few basic things about the phone from the last OS, a few things took getting use to, such as moving the end call box. I also purchased a windows 8 computer, the phone and the computer work perfectly with each other. One Drive  makes zune easy. Cortana is living up to her hype she is a wonderful addition to the phone making little things in life easier.
This is the first time I can recall where I do not think they can actually improve this phone.