The samsung 8000 series is the one you need!
http://www.samsung.com/es/consumer/a...subsubtype=led
We bought the 40 inch a while back and it is just a great piece of kit! The 800 Hz picture and the no glasses 3d depth setting is really impressive.
The smart tv side of things runs different apps, you can easily download new apps, so should be pretty future proof.
They are the most beautifully designed IMHO.