Having joined both at their inception I find both offer a good service.

@dustsweeper does exactly what it was designed to do which is great.

@steembasicincome on the other hand offers small contest such as this where members can dip their toes in the water, learn how to grow by re-imbursing others with a reward, assisting with more growth development.

#SBI allows you to sign others up to become a fully fledged member to start a fresh path on steem. Concept was designed as a trial to help members grow, which is what it is doing.

Dustsweeper is more a service to you as an individual; SBI is a service to assist members growth in rewards from members, my preference would lean toward SBI shares.