I recently purchased (2) Panasonic TH-42PX600U plasmas; one for the Living Room and another for the Master bedroom. I am very happy with the 600U series Panasonic and need one more for my basement where most of the TV seating resides. The average viewing distance will be around 13 feet. I love the price for the 50" (TH-50PX600U), but wondering if the 58" would be better to accommodate multiple viewing angles and further viewing distance (13' as opposed to 10' in my Living Room). Also, besides a big price jump, would I lose any picture quality going from the 50 to the 58? Any other disadvantages?