OK, so I walk into BB with the wife, and there it was a PN50A650, for only $1,499, plus $200 toward at home wall mounting or calibration, I was really wanting a 50PZ800, but for the price (the wife's main concern) I think it is to good to pass up. Is the Panny that much better then the Sammy??? also, how hard is it to calibrate a plasma? is there special equipment or anything, or do I just need to get ahold of a special DVD???