On my commute, I've been listening to these nonstop.
Last Note (L-tone) »
I bought all of L-tone's albums during a recent Bandcamp Friday. Previously, they weren't exactly available, so I got my L-tone fix via their top 50 collection. There were lots of good songs in there, but nothing's better than the original projects. Last Note didn't disappoint; so far, it's my favorite one, and I've listened it countless times on my commutes this semester.
Baptize (ILU) »
Baptize is exactly the kind of gem I'm hoping to find when I go hunting for Vocaloid music. My first listen was via copies of the tracks I'd downloaded from Niconico and Piapro, so you can imagine the quality wasn't great. I was intrigued by it, and before long it was my go-to soundtrack for my sunset commutes. Eventually, I was lucky enough to get my hands on a (sealed!) copy of the CD, which allowed me to hear the songs in the best quality.
Click on the album titles for links to the music. I have backups of all my music, so if a link is broken, just let me know.