Waiver Wire RB pick up

So currently have Darwin Thompson, Devin Singletary, and justice hill on waivers in my league and debating on grabbing one.

My backs are: David Johnson, Kerryon, Montgomery, Duke, Damien Harris

Considering dropping duke since Hyde came along and i don’t want anything to deal with it. Since LeSean went to KC would singletary be a better option or would Darwin still be a good option?

What’s some thoughts about dropping duke for one of those three?

Singletary! Starting rb behind the bills OL.