Samsung PN63B550 (in the light controlled room) and a Panasonic 50" Plasma, about a year old, lower end but it does have 1080 moving resolution. I don't have access to it right now and don't recall the model number.
The VGA connection would just be for the occasional connection to a laptop. The HTPC would be connected via HDMI. Agreed on the slim line profile, I discovered that was the case for the GT today and to me that's worth the extra $$$.
Fair comment on the 3D glasses, although I do balk at having to spend a significant amount extra period. To be honest, 3D is low on my wish list but I must confess I'm curious to see how it is beyond the few minutes I've experienced at various retail stores.
Thanks for the feedback, I'm definitely leaning towards the GT. Just need to decide if the 65" is worth the extra $700 or so over the 55".