HDC: Sky v Sound Breaker Soundbreaker gets my vote.
Sky had a couple of flaws during his parts of the battle, I feel. His flow came a bit sloppy at times, and some bars were delivered in a rush, it seems. And while the four bars of sound effects made me chuckle, I also felt that it, along with that one bar you didn't write at the end of the first verse, is a bit lazy and, essentially, you made the same gimmick twice. The mixing quality also could be improved, as it was just a little bit difficult to distinguish Sky's verse from the beat.
I wasn't blown away with Breaker's flow (not to say it was bad, cuz it wasn't. I think he just played it safe), but I really enjoyed his lyrics a bit more, and after the battle finished, his lines were the ones I remembered. The "speed of lag" line got me, especially. The story about the electroencephalogram really worked, too. The sound quality was great, too, and I was able to hear every part of the verse clearly.
Both of these artists are good, and I enjoy listening to both of them, but Breaker came out better in the end. I think Sky can do better, and maybe if this was a regular battle (and not a "who's more chill" battle), we might've heard a different Sky, but, hey, it is what it is, and it is a fun battle to listen to.
Good stuff, both of you.
Give It Up 
Glitch - Random Verse 
Godhead ft. Sky from D-Squad 
CLAB - Teqneek vs Prometheus 