I've got the 40W3000 and i must say it's a fantastic set. The X series is slightly better, but i don't like the styling anywhere near as much.
The W4000 will be out soon so I think they've pretty much discontinued the W3000, although you can still probably pick it up at some stores for a good price.
It's a great set, fantastic HD picture via my Sky box and via my PS3. Plus i was very pleased with the standard of the SD picture, after tweaking some of the settings (freely available on some other, more in-depth forums), it really does produce a good pic.
Try and get a newer panel, the only complaints there have been about these LCD's is a greenish problem (something i don't have) with some blacks, and also a purpley tinge issue (something i don't have to any great extent), but these are apparently fixed on newer panels, and if not there is a firmware update and a service-menu tweak to solve them.
All in all a fantastic set 🙂