With 300,000 Steem Power, I would choose to help foster the lower community, making attempts to help the newcomers grow by curating their content as long as it wasn't particularly offensive or obscene. In this case, I would help the community as a whole to grow as the lower side would be boosted by the selflessness of a well respected account.
Either way, I am sure that you will make the right choice with your own Steem Power. Have a wonderful day!