I have not cooked on a commercial FE but have used the Southern Pride units 300 and 500.
Great smokers, consistent product, i also seem to get great yield (almost 70%) on butts. You do have to feed it logs regularly and i would guess the maintenance would be lower than the FE's.
The Old Hickorys are basically the same as the SP.
Good luck and where's the new location going to be?
You really want a non stop smoking machine, look at the JR Oyler.
Pitmaster @ Lockharts BBQ
I cook the best brisket north of Dallas. Get over it.
Northern midwest director for OBR
BBQ Person of the Year 2013