This Blu ray player is one of Sony more expensive models. Sony is the brand which most people measure Blu ray player quality against, so surly this is a brilliant player? Well it depends what kind of person you are. If you're an audio/video purist and want the best possible quality to go into your TV you'll love this. If you want loads of features and gadgets you might be better with the Sony BDP-S370.
This player features some great quality video and audio processing, the picture and audio is great. Sony claim this is due to their new bit mapping and x.v. colour technology, these things are meant to allow for more colour variation therefore making picture look more realistic. This is true although I'd say larger television would benefit more. It also up-scales DVDs, making a marked improvement in quality.
The player also features Wi-Fi to allow for firmware updates and access to BD live features on disc. DLNA is a communication protocol and allows for JPEGs to be transferred wirelessly, JPEGs can also be viewed via USB also.
This is a great player if your priority is quality, but make sure you have a quality TV or it's a waste. This model is due to be replaced in September by the BDP S760 so you might be as well waiting for that.