They look the same but the LM8600 has a dual core processor. The TV is faster overall. My friend has one and I own a LW5600 so I can attest that the dual core makes a difference.
I'm planning to upgrade and I came across these two TVs online. The LM8600 is around $200 more expensive but they look the same to me. It seems they have the same feature. Both have 3D and both are smart TVs. Please help me understand this price difference.