Pros: Great performance for price, Good camera, Sound Quality
Cons: Battery Life,
Performance: Generally really well. Shouldn't lag at all with normal usage. Should be able to handle most modern apps. I managed to get around 8000 on Antutu Benchmark. Currently runs Android 4.0.4 with Android Jelly Bean scheduled later. Not too much built in Sony useless stuff.
Camera: One of the best for a phone
Design: Pocket friendly and comfortable to hold. Nice looks
Battery life: Terrible. Half a day with average use
Sound quality: Really nice. The software equalizer settings works rather well. The pre-installed music app (Walkman) is very user friendly and also very powerful. Though you can get many other different music players from the Play Store.