Initally purchased the Panasonic from Amazon.  I received it damaged, so I had to send it back.  They didn't have any left in stock, so I decided to purchase a 50" plasma from a local dealer.  None of the locals had the Panasonic that I wanted, so I went with the Samsung HP-R5072.  I had the Samsung for 20 days before I returned it and purchased the Panasonic TH50PX500.