I started bounties last 2017 because of just one particular project I did which is my worst ever; 'C' project. I spent a lot of time on that and it never paid and that was my very first bounty. After that I was discouraged on doing bounties until sometime last year, others are medichain, crypterium I think, accountingblockchain( lost my tokens because of kyc). My best bounties for now are repme, copytrack, peculium while my best airdrops are ethereum blue(the best of the best including bounties), hydro, rebl, Ebch, Enu.