I have used Martin Espinal on my last two trips. He has a well kept up A/C van, speaks great english and is an all around great guy! We spent a full day with him in Puerto Plata, Sosua, and Cabarete. His fee was $80.00US which I think was a bargin for all his services. Also if you bring some supplies for the school children he will be happy to take you and help out in making sure they are taken to the most needed areas. His email is:
espinal30@msn.com
I am sure you will be happy with his service!
John