Those both sound pretty mediocre Meta. It's not the song's fault, it's just that lilium is a hard song to be done by vocaloids, and in this song the artificialness just shines through loud and clear. The first one does a better job than the second though.
Artificiality? I personally think that Luka's rendition of Lilium is pretty convincing. And yes, I did watch Elfen Lied. It's not a matter of 'does it sounds like a human voice?' (vocaloids often cannot approach this). Think about it - if a vocaloid were to sing Lilium, would there be better renditions than Luka's? It would be hard to surpass that one in particular.
Haku's Lilium is clearly crap, whether compared to Vocaloid or human voices.
For Meiko's thingamabob just posted, the PV is perhaps the most interesting part. The music is good, but not the best.
I'm happy that you enjoyed them Meta ;D I had basically given up on posting more~
And to answer, I put together a rough Episode 7~! A collection of short stories following a similar theme...
But first, nice video... ;_; I hadn't tried looking for english vocaloid videos... wonder what else is out there ;D