They are both nice but I think Costa Linda is nicer. We stayed at CDM last year in a two bedroom and while it was very clean and comfy is appears a bit older. Have seen the Costa Linda rooms and they are lovely. The unit at CDM was an exchange and it had a great view of pool and ocean so if it came to view that could decide it. I think all the 2 bedrooms at CDM are ocean view but the one bedrooms are across the back parking lot on the street if I recall. That would certainly make a difference to me. I will say we exchanged with RCI and the info listed on the confirmation was the unit we got if that helps. Linda is the local Costa Linda expert so maybe she will chime in.