You might want to consider "industrial" grade tools (yes, B&D makes them
too). True, they cost more than "homeowner" grade but they die only
infrequently...

If you buy good contractor grade tools they will last a lot longer and
they can be fixed. DO NOTbuy brand name tools at the big discount
houses (Home Cheapo, Lows, etc) . Milwalkee, DeWalt, Makita, and other
name brands produce a grade of tool specifically for these places and
you can't get parts. The gears and bearings are not the usual parts in
the industrial grade tools. Most of these sub standard tools have the
model number as XXXHD for the Depot model. I found this out the hard
way when I went to get a few tool repaied after the gears blew out and
the motor started to buzz due to worn bearings.