I prefer bounty, because in airdrops you can earn very little and most of airdrops are just scams.
if we are talking about scams.
airdrop or bounty most of them were scam(it has been proven before and you can see it directly),it's all about our perspective.
personally i prefer airdrop instead of bounty,because we get it for free when bounty needs us to do something in order to get the rewards.
also about 'very little',i am totally against it.
because i got a lot of money from the airdrop,
for example eBTC,Twist and many more.
(of course before joining any airdrop,we need to do some research)