Rob... Sorry to hear about your trailer.. I saw your pics on fb.... yuck...
I've cooked on a 120 for a class and had food off of one several times.
They are on par with flavor of the FEC100... but little risk of fire given the fire is in a separate chamber.
Temps seem very even across the pit, Moreso than on the fec100.
I think either would be great for a commercial application.
Nordy