I really don't think that either of those are a good choice, but that's just my opinion. Out of those two smartphones, I think the one to go with is the Lumia 920. It has a larger screen by a whole inch, faster than the iPhone 4s, and is pretty user-friendly. The Lumia 920 is about 7 oz., while the 4s is at about 5 oz. The Lumia 920 also features Corning Gorilla Glass and has an average of about 3 hours longer battery life. Also for the amount of songs, the Lumia 920 has 32 GB of built-in storage and the 4s has 16 GB, although you can pay more for more storage on the 4s. Really, it's all up to you and what you'd prefer. It's kind of a close call.