Favorite vocaloid song

I will start. My favorite is "1/6 Out of the Gravity" featuring Hatsune Miku by VocaloidP (Odo-P) http://youtu.be/JJYyeFoiYH4

Old but still my favorite version of the song. http://youtu.be/u0NIIZWrpmc Yes it's Yanagi Nagi/Gazelle, the same one who sang Kimi No Shiranai Monogatari for Supercell.

I love two, my favorites are Ageage again: http://youtu.be/JHLrS04mrpc And Levan polka: http://youtu.be/qmf9JkedPR8

@ Naomi, Some Utaus are good, some not so good. My favorite Utau is Namine Ritsu. Utaus are useful for learning the basics of vocal synthesizing and give you the ability to use your own sample vocals. I feel the vocaloid software is a little more powerful and offers much more capabilities and interoperability with other audio engineering tools (but also costs a lot). http://youtu.be/63fqkE6D_Og

The only vocaloids I own are Megpoid Gumi, Hatsune Miku, SeeU, Rin/Len, Luka, IA, and Cyber Diva. I like all the ones I own (SeeU is a little hard to work with, which is probably one of the reasons SBS ARTECH dropped support for her). I have not been successful at completing any of my vocaloid projects, mainly because I do not spend enough time working on them and get distracted with work/travel (not having good skills at audio engineering and music theory may be a factor as well). I do like Anon and Kanon, they are cool (since my brother and I are identical twins, we seem to like anything with twins). The vocal quality and fullness keeps increasing as more vocaloids keep coming out.