For me the best manager is Rig4hodlers
He always look very carefully at the project he wants to promote. Make good research and mange bounties only for legit ICOs. After the program is over, he always helps participants if there are any distribution problems (many managers immediately ignore the participants requests after the bounty ends).
The manager should work for both parties - for participants and for developers - this is how works Rig4hodlers.
I fully trust him.