Another update for media streaming.
I tried to stream a 1080p rip of a full movie today, 11GB in size. Although the video was fine, no stutter, the audio did stutter. I will be testing via a USB HDD tonight just to confirm it was indeed my powerline network connection. I have tried changing the network connection to full duplex but it makes no difference. It seems 1080p streaming may be out of my reach, just, and I will have to settle for 720p rips.
I know there is gigabit powerline networking now available so maybe thats something I can try for the future, but I am happy enough being able to stream my dvd and avi collection with no issues, and HDD rips if I dont want to use the discs can be made using a USB HDD attached to the front of the player periodically.