Ain't no best – East, West, North, South, flossed out, greedy
Nas is calling the different regions in the Rap Game equally bad (“they are flossed out and greedy”) meaning they sold out to do more commercial music to get more money instead.
It ties to the next line where he is destroying everything and everyone with napalm and start it over from the beginning. Just like his song Destroy and Rebuild from the same album. Nas speaks up on these issues in this interview:
To help improve the meaning of these lyrics, visit "Ether" by Nas Lyrics and leave a comment on the lyrics box