Mo,
no they're not
you have 3 things that contribute to that with boring machines.
1. length of the handle arms
2. gear ratio
3. thread count of the lead screw
the trick is to find the right bit to go with your machine to maximize speed and minimize fatigue. the boss machine has 2 gearing options. the way i compare machines and bits is to count the number of cranks to go a certain depth -- say 4" and try to get it as low as possible without having to work too hard (which in addition to just plain sucking can also mean you're torquing your machine and might break something).
