Organic EL is very nice: currently it's slightly immature though. From what I've seen of OEL displays, they have to invert them regularly in order to normalise pixel life! (watch any OEL unit in demo mode).

They're also not colour - there are fixed colour areas (no red - OEL red is very hard to get currently).

When the OEL units were announced I talked to various manufacturers (Kodak hold the patents but Pioneer manufacture their own displays under licence - unusual for a company not generally known as a display manufacturer), but most said it wasn't worth it currently and it'd be best to wait a year or two for the technology to mature.

Hugo