We stayed on the Mares side, and travelled Transat Holidays.
We definitely did visit the PRDO, and tried pretty much ALL week to be transferred over but it was WAY too expensive to do so (even for me), we absolutely LOVED it ... we also visited Guardalavaca and again, I was tremendously impressed.
We found we compared it to the Daiquiri all week ... and now can't wait to return to the Daiquiri as we definitely preferred our stays there.