They do look nice.
I've said it many times in many places before, but GW really does have some stellar plastic kits nowadays. I own 60 odd plastic daemonettes (newest ones) and they are fantastic. The detail is fine. Sure, not quite so unique as a smaller scale game, but, well, I could make some comments about the quality of certain sculpts from a certain range that would undoubtably incite a flame war here...but I won't. Not because they wouldn't be true, but because it wouldn't be appropriate.