I see two sides of Invest and Bounty, maybe I will group them like this:
Bounty:
+free, no fees, if the project is successful then the result is free funds.
-takes a long time, sometimes the project fails, takes time, space and mind.
Invest:
+fast, instantly get profit, more satisfied because trading and profit from personal capital.
-not free, there are fees/requires capital, if the coin project fails then the result is we lose funds.
This is just a glimpse from me personally between the pluses and minuses of Invest and Bounty, maybe other members who are experienced can add +/- from me that have been written.