Ahh the beauty of the DigiQ. I used to fret all-night cooks. I could "sleep" -- but it wasn't a good sleep since I'd have anxiety about the expensive cut of meat on the smoker I'm likely to ruin, and the dozens of people coming over tomorrow who will be only marginally impressed at my 'Q abilities.
Now, I can dial in my pit temp, set my desired food temp -- and go to bed at a reasonable time. Let the tinkering happen when I wake up. Makes for a MUCH more enjoyable BBQ experience, albeit at an expense.
WSM 22.5"/DigiQ DX2
(built myself though I'm a moron)
Weber Performer 22.5" - Charcoal
Weber Genesis E-310 - Gas
Weber Smokey Joe (A RED one!)