Hehehe... Centennial is pretty poor in and around Sosua/Cabarete.
I only use it, as it annoys the life out of Scott when it beeps looking for a signal. Kind of strange, as Centennial use Verizon towers and some of their infrastructure.
I hear Orange and Verizon are killing each other trying to install more antenna locations. This is because a new "large" player is expected to enter the market in 2005. I have no idea who it is, but I'm trying to find out.