SDT
Pebble Pounder
But look at the 9XR. It has an ISP port accessible from outside the case specifically for changing the firmware. And if it was purely monetary they would be better off using the same chip in everything. The... what is it... 328? Whatever it is, it can handle anything we could ever need on the ground or in the air and they're dirt cheap. Just doesn't make sense to me, but I'll work with what I have.