So, I always tend to choose as my flagship the biggest, beefiest ship I have, generally that has the most hull, shields and defense tokens. I see this as being the best choice, since it seems most likely to survive.
However, it seems to me like a lot of the lists that I see on the forums tend to like to use gr75s as flagships. Given how squishy they sometimes feel, what is the reasoning behind this? Is it just because their support role tends to have them out of combat a lot of the time? How do you choose a flagship?