The Samsung 71 series features, what they called Auto Motion Plus, also known as 120Hz, this very high refresh rate helps to keep images looking very clear during fast motion scenes and reduce motion blur, and a high dynamic contrast ratio of 25,000:1 for superb colors, and a fast 8ms response time. Three HDMI 1.3 inputs, USB, ATSC / clear QAM tuners.
Available in 40, 46, and 52 inches for $2700, $3400 and $4400 respectively.
The Samsung 81 series has the same features as the 71, but featuring LED backlighting, increasing the contrast ratio up to a stunning 100,000:1, the highest I have even seen claimed. The 81 also features 10-bit processing, 8ms response time, same tuners and connections.