I have no problems whatsoever. The problem isn't the amount of colours a TFT can show in total, but how many it can show at once. That's where the "contrast ratio" comes in. I've seen a 17" LG with 450:1 contrast ratio, and a 17" Samsung with 700:1, and you can really tell that the Samsung is better.
Too bad we've had so many dead pixels in the Samsungs - we won't even sell them anymore because of it.