I've got a Series 70 Gold Cup, and I also have a M645,745, and a M945. I have been on the hunt for a M845, but they are elusive. Sevens texted me with a link on GB, and it ended up going for north of $3000. Now the M745 is a nice piece in itself, but like it's been said, it's no Gold Cup. But for that price, it's worth it. Are you getting the box? Now I can't speak for the M845, but if you want a .45, look for a M945.