Last night as I was doing my daily check through the top 100 ranked videos on nicovideo.jp, it dawned on me that it's been more than 2 days since the Kagemine Rin/Len combo pack have been released. And it was incredibly apparent, with the top 100 dominated by tons of songs by the twins. After watching a few though, I have to say I'm incredibly impressed by the Rin/Len rendition of the Levan Polka. It sounds less robotic than the Miku version, and really demonstrates what the system can do. I've embedded the videos after the break.

Nico for quality:

Youtube for easy access: