TopHash (more than doubled my investment there in just 2.5 months)
https://tophash.net/?ref=Avendora24

Autobitcoinbuilder (doubled my investment in 13 days)
https://autobitcoinbuilder.com/?ref=Avendora

As for Coinomia, that $100 turns into over $200 in just 15 months if you don't reroll it back in. But it has the potential for a 38x multiplier in just 48 months if you work it right.

Coinomia is more of a long term investment than anything else is.