I own the Bosch Digital Angle Finder. I have found it to be a very handy aid in working with angles, particularly trim, but I was also using it to help me frame some really oddball inside angles this past week. I like it because it's accurate to a tenth of a degree, and it is very easy to read. When I'm running base and crown I'll go all the way around a room measuring and writing down the angle of every corner on the wall, underneath where the trim will sit. This really saves time in the long run! I also agree that its limitation is you can't use it in smaller areas. I don't regret the purchase 8)