It has a good amount of memory, built-in WiFi (finally), HDMI cable, touch buttons, slimmer looks and much faster. However, it often generates a lot of vibration, which prevents it from getting a full 5-star rating from me. My unit has no disc tray vibration as some reviews say. I believe all of my vibrations are due to the vent panels not being as tight as they should be. This definitely includes the part that pops up so you can remove the hard drive. Regardless of whether the box is vertical or horizontal, vibrations still come and go. Currently my device is in a horizontal position and when I press the air vents on either side the vibration stops. I think I can eliminate the vibration by clamping some spacers or a strip of rubber or something to the edges of the panels, but haven't tried it yet.