i got the 4600 and it ran fine on 20C 2S lipo's But it does wake up like crazy on my 60C 2S SPC pack. But i would run 2S, not 3S. Reports of the ESC frying on 3S with the 4600KV are everywhere, but on the 3800 you'll be fine. That and the 4600 is a bit cheaper most of the time because it doesnt come with fans, which i would reccomend for the ESC.
Honestly, without emotions no progress could be made. Curiosity is an emotion, logical thought is driven by the lust for something else, better or worse is inconsequential.