Got my 55st50 last night...
WOW that's all i can say.
Coming from 7 year old none HD 42" Panny TH-42PWD6UY its almost a little overwhelming size vise.
For the moment running all video to it via Component RBG (HDMIs are on UPS truck)
Last night watched Rangers/Devils game 1st period with out of the box settings and noticed some FBR going from ice to close ups... Changed settings to D-Nice none-prep and whaaaa what a difference. LOVE THE PQ...
After the game flipped through some movie channels (FIOS) and was very impressed.
Wonder how much better will it be via HDMI...
Tried youtube app with TV built in speakers... well... my Onkyo 3.1 set up will not be out of job any time soon.
Popped in USB stick with bunch of different video files... my WDTV also not going anywhere..

)
Viera iphone app is nice, but not sure i will be using it much, but nice to have.
slight buzzing going from dark to light picture but nothing crazy.. i think my time capsule is making more noise during back up than TV.