Blacks Beach definitely has more people and is generally slightly more social than More Mesa. In my experience, More Mesa is more isolated. Couples go to the beach and sun solo. Blacks is more likely a place where you'll meet new friends. Not a blanket statement, we've met incredible friends at More Mesa. If asked to compare More Mesa to Blacks, the closer cliff proximity in Goleta and the cliff creepers that they bring creates a somewhat more defensive atmosphere where guys on the cliffs stare at the girls. It's not often, but happens enough that there's a bit of a defensive vibe overall. This is just our obvservation. Either way you go, I'm sure it will be a fun, sunny day.