Deadly, my experience with the ProQ 20 was LESS than stellar. As was Sterling's Both of us HAD them, and no longer HAVE them.
I was cooking 6 turkeys for friends at work, on the ProQ and could NOT get above 200 degrees F. Told my friends to finish the birds off, in their ovens for an hour at 300 degrees F, and they all came out OK.
Sterling, was cooking something on his (not anymore) Pro-Q, and again could not achieve 200+ temps. Dumped the charcoal basket in his first UDS, and we were at 225+ in no time.
Bought mine for $100, sold it for $80. Sterling made a profit on his, and kept the cold smoke generator. (I'll be using that cold smoke generator tomorrow, to smoke some Tillamook cheese. (2 pounds for $7.99 at my store for 2 pounds. Sharp, co/jack and pepper Jack.)
steve