For what it's worth, Mike is the preferred photographer at the Paradisus. He's married to Claudia Rodriguez. His work is pretty good from what I've seen.
I've booked Mannia Audio for our wedding, and Carlos seems great - he's actually going to come and meet us when we go down for our site visit - which I think is a very good sign. Plus, very affordable.
That being said, I haven't actually used either, so I can't give you a review.