This is the one area where I think led-lcd has any advantage over plasma.
Plasma kill lcd when it comes to picture quality, so I will never buy an led-lcd. However, when I look at someone else's led sets they are noticeably much sharper than plasma tvs (noise free). This to me is the ONLY advantage lcd has over plasma. For example when you sit close to a plasma you can see the phoshors moving, yet for an led set they are crystal clear at all times. You can still tell a difference in sharpness from normal levels between the tech also.
Since this is a phosphor based tech it could be difficult, would it be hard to become sharper? Will PDP ever be nearly as sharp as an led set?