I typically swap between a single 2* and a single team of 3* to alternate my raid damage between 500, or 50,000, depending on the amount of stamina the boss has versus the number of players pitching in. That way, I can make sure it dies in reasonable time with enough participants to partake in the bounty.

It is so very nice to see some of your allies painstakingly calculate their damage within specific percentages on EVERY boss, I kid you not. 600k Boss; There's a 300k team for that! 1 Million; Got 500k for that! 300k? Where'd they put that 150k team? Olympic gold medals for those guys on my list.