Did a 7lb turkey breast this weekend with mesquite chips. One and a half hours and the little "done indicator" had popped out. Skin was golden brown and it was pouring juices into the plate I placed it on. Fantastic flavor (for those of us who like mesquite). The only down side was that it did not crisp the skin of the turkey. It was dry but not crisp, so for those of you who like to eat turkey skin, this isn't the gadget for you.
FYI, I did't brine it or rub it....just a little salt and pepper and on the Orion. The next time, I'll have to do at least two breasts at once (could probably accomidate 4-6 if needed) because I keep losing samples to relatives who are passing through the house.
I'm in love with my new gadget.