Howdy, Paul!!
Yes an "N" or a Fergie will run a post hole digger.
I use my Fregie for the following: brush hoging, finish mowing, plowing snow with a backblade, maintaining my driveways with a landscape rake, spreading manure with a manure spreader (spent most of the weekend doing that!), pulling hay wagons (real big ones), cutting hay with a sicklebar mower, and probably more stuff I can't think of.
Go for it, Paul!!! You won't be sorry!!! /forums/images/graemlins/smile.gif