So as the equation subject really.
What bluetooth board would work with that setup?
I'm not worrying about what can be sent/received with amarino etc at the moment but I want to get a bluetooth module so I can start messing 
Which of these two would be best, if any? - Also would it need to be a master/slave? I presume slave..
Or (which is half price of the other):
Details on Amarino: