Finding the right bluetooth transmitter.

I am currently doing a science fair project for my high school that requires me to use Bluetooth signals. I need to find the right Sparkfun board for sending just some basic numbers, but I do not know which one to pick out. If anyone with some knowledge on this could point me in the right direction to what parts I need that would be great. :smiley: :smiley: :smiley:

What features are you needing?