I called today to check on the price of my upgrade if it doesn't come with the m-power, bt forgot to check on the types of receivers available. What ones are offered now and are they pretty easy to use and are they all bluetooth? I thought a long ttime ago I'd heard the earthmate is really simple to use, of course i'll use my wired megellan for a while if i have to, hopefully i could get the receiver later with a upgrade? anyone know? but wanted to know what goes out now with the softare. I'd just be glad to have software with maps! Mine doesn't which is a big reason why i never played much with it.