We are looking at 2 houses. One on Playa Flamingo, the other on Playa Potrero. The houses are similar in size, cost, amenities, etc. Can someone please advise as to which is the "better" beach? Flamingo looks to have sugary white sand, whereas Potrero has dark sand. Is this true? Is one rokier than the other? If you had to choose one beach vs the other, which would you choose and why? Thank you so much for your help. Can't wait to get down there.