I got this media player elsewhere locally, before Amazon dropped their price. Anyway, the GUI is fine. It's easily navigable, not cluttered at all, presented in a beautiful package, and certainly easy to read. All pluses there. The first videos I attempted to play were 720p mkv files over wireless network (on a 1TB HDD connected to my computer in the basement via USB). After taking a few seconds to gather the first few pictures from the USB--> wireless connected storage device, the WDTV Live streamed the videos seamlessly! I even paused one for like 8 minutes while making dinner, and it resumed with no noticeable glitches, artifacts, or rendering/buffering. The second (and only other) file type I attempted to play was a 1080p TS file I had recorded from my cable box. This took a little bit longer between hitting play and seeing video on the screen, but time was minimal. I want to say no more than 4 or 5 seconds. Again, it had to pull the video from the HDD to the computer via USB, and then again from the computer to the media player over the wireless G network. This video also played flawlessly! No artifacting, no rendering/buffering/, no audio sync issues or dropped frames. It plays video from hella far away on the network beautifully, and resumes from pause just as well! I only have 2 cons listed below:
-The out-of-box immediate software update took EONS! I was waiting for the newest firmware to download for almost 30 minutes. -The remote control has highly raised rubber buttons that cannot be pressed in fast succession, or must be pressed a little bit harder in order to get signal sent. It's annoying, but I'm sure I'll get used to it. (Also, on this note, there are privately developed remote control apps for both Android and iOS in their respective app stores which may be an alternative for myself or some of you)
In conclusion, the new interface is exactly what I was expecting (if not better) after seeing last years release of the GUI on the hub. This player plays absolutely everything! It even plays items from peripherals on computers 2 floors down in my house wirelessly with very little wait time or visible effort. The price point is fantastic, and the product does not disappoint.