I use the guesser on box offsets, and math on all the rest (BTW, the 30° on a Benfield is when the handle is straight up & down).

Greenlee "Little Kickers" are pretty cool, but bend a little too deep for most of the boxes we use. Also, they stick sometimes, and you have to rap them on the floor to get the EMT out.

By far the easiest box offset is a Minerallac...S [Linked Image]