No the top one is quite good quality, I would go up to 2k for it if I didn't make my own heads.
(just cuz the abstract stuff, the eyes are too pixilated)
I think you should work on making the abstract a little better and work on less blocky stuff, make it smoother, people tend to look away from blockyness. or pilxlyness
Don't just down players, give them advice, more competition is always wanted.