Anybody consider external bluetooth GPS?

Well since the GPS seems to be a hit or miss overall. Although it seems that some days it's better than others, has anybody considered or actually picked up an external GPS module?

I was toying with the idea so i dont have to worry about the signal strength or anything.

Such as this. http://www.amazon.com/gp/aw/d/B0018Y...=ATVPDKIKX0DER