Lasers are no better (and useless outdoors) than a pencil line drawn with a square or angle finder.
Cutting crown "upside down and backwards," or using one of the available crown miter blocks makes crown easy. And the more features a saw has, e.g., sliding, the less accurate it is.
The ultimate shop would have (in order) a 10" compound miter saw, a 12" sliding compound miter, and a smaller one with like 60 teeth on an 7-8" blade for the dinky stuff. A zero clearance table insert is a must for the small saw.
