Which HDTV is better? LG 47LN5400 or Samsung UN46EH5000?

I haven't seen a performance review that really makes this a difference between the Samsung and the LG models that you listed. Looking at the "extras" involved for each HDTV; however, and I see that Sears is currently offering free shipping to qualifying locations (I think this means that you actually have a Sears located nearby where you live). If the price remains equivalent between the two models, this would be enough for me to go with the LG model from Sears.
That being said, I have a Samsung 50" model in the home and could not be happier. No issues with the TV, great performance. Does that make the decision more difficult?