led fh6030

I'm not buying a 4k TV right now. I don't have the budget and only have about $500 to spend on a new TV. Which TV will last me longer in regards to technology? Spend $300 on the Plasma F4500 Series TV - 43” 720p / 600Hz / 2 HDMI Link or Spend $500 on the Samsung LED FH6030 - 46" 1080p /...