no matter what, the most important factor when selecting your own site is choosing a place or space or group of people to whom you already feel connected in some way, either by direct membership, burgeoning interest, or cultural/political belief. That last statement is so important that it merits repetition. The most important consideration as you narrow your search for a research site is to identify some kind of a connection with the place/space, even if you might not consider yourself a complete insider, even if you believe you know very little about the culture.