I was curious about this.. When you get a board from a manufacturer, not necessarily made for a certain mod, wouldn't you have to program it?
I had almost made up my mind on getting the sigelei legend, then I found out about the sigelei 20W, an upgraded legend that goes up to 20W and has some other improvements. I believe it uses the YiHi SX220 board. But supposedly, the YiHi SX450 Is going to ship out any day, and the first test samples of the YiHi SX470 are going to be ready by end of this month. Not sure How accurate/realistic that is, but I'd sure love to get one.