I swim laps at least weekly for the last 9 years, and these have been my go-to swimmers- I'm onto about my sixth pair. Intermittently try other styles, but no other makes the grade. Supportive. Allows lap swimming without adjustments. Holds up in a heavily chlorinated outdoor pool (I always hand rinse- they last about a season with regular use). Right size and you don't flash ample cleavage to the guy in the next lane.
I haven't felt the same 'drag' issue other reviewer mentioned, but I wear a rashy for sun protection a lot of swims anyway, so it may be all relative. Bottom doesn't feel baggy, but having put on weight it does now ride up my bottom (I plan to buy the next band size up with my next pair which fits with what is happening with my bras).
I wear my cup and band size.
The decorations under the bust doesn't wow me, so I keep a 'pretty' pair of swimmers for social/holidays.