The guy next to me huffed loudly -- an explosive grunt of displeasure that had me halfway between amusement and horror. We were in a meeting room at the Hilton in New Jersey, seated in front of a giant TV with a giant sound system, and we'd just seen footage played back on Panasonic's UB900 4K Ultra HD Blu-Ray player. Compared to the competitor, it had performed well and everyone in attendance was eager to get their hands on one for testing at home.