Groups in Bikinis: Who would you choose and why?

You can tell a lot about a woman from her taste in swimwear. Does she have the confidence (or overconfidence) to pull off a sexy small number or is she insecure about her body when she's next to her friends who she thinks are hotter and goes the modest route. Which of these bikini wearing babes do you like out of each group and what is it you like about them (or if there is one you don't like comment on her too) What do you think they are like in bed and what would you do with them?