dogcatcher,
They are light, they are accurate, and they are affordable. That's a tough act to beat. Some of the criticism of them is snobbery, and some of it is honest difference of opinion. The latter I accept and respect, the former I don't pay any attention to and instead make up my own mind. If they were as big a p.o.s. as some of their detractors claim, you wouldn't see so many happy owners. That kind of tells the story right there.