elbitz can be your other option. May be more disorganized but they are easier to seed compared to bitme and bitspyder, in my opinon anyway.
To bitspyder's credit, there are often free leeches and events that can also assist you in maintaining your ratio.
As for bitme, you'll just have to make an effort to keep your account in good shape.
With slight variation in content, all 3 have their own merits.