It really depands on what your needs/wants are, have a think about those before deciding.
I recently bought a 47 inch backlit LED, no 3D, with network connection. LG 47LE8900.
Reasons:
Backlit LED: The picture quality is excellent, every review I read said that.
3D: I am not interested in 3D, I think it does not add anything to the type of films I watch and in any case the home technology for this is in it's infancy.
Network: I watch a lot of things on BBC iPlayer, it is nice to be able to stream direct to my television. There are also apps for YouTube, FaceBook and others but I don't use them. No direct feed to internet but then again no mouse or keyboard so would be limited anyway.
Also, Richer Sounds were doing a really good deal on them. :)
One last thing, the sound on my TV is apparently rubbish but I didn't care as I already had a good external speaker system with sub.
Bottom line, don't pay for things you don't need but it is definately worth splashing out on the features you are interested in.