Had an MES 30” previously.  Enjoyed it.  Decided to replace it with propane and chose the thermotemp.  Took a little getting used to, but it produces wonderful meats.  Slow smoke (225F) seems to be fairly efficient on propane so far.  Started cylinder at roughly 50% on the gauge and did both seasoning runs (total 5-6 hours), turkey, pork shoulder and ham, and a few chickens.   Of course your mileage may vary on fuel use.  I’m thoroughly pleased with the purchase.