Caribe Tours Express is now faster than Metro because it bypasses Santiago. Just make sure you get on the express because if not you have a quick stop in La Vega and then 2 stops in Santiago.
It will leave you in Charramincos (just before Sosua) and from there gua gua would be best because carritos will stop in Sosua and you will have to switch.
I believe there is a 8:50AM, 10:50AM and a 1:00PM that will bypass Santiago. Shaves about 45 minutes off the normal route. I posted the Caribe Tours link with prices and schedules above. Not sure about Metro, never used them.
Caribe Tours Express is now faster than Metro because it bypasses Santiago. Just make sure you get on the express because if not you have a quick stop in La Vega and then 2 stops in Santiago.
It will leave you in Charramincos (just before Sosua) and from there gua gua would be best because carritos will stop in Sosua and you will have to switch.