I have a Pitts and Spitts Maverick 2000. Like others have said, its built like a tank. The Controller is spot on holding set cooker temperatures, with no spikes or fluctuating temperatures, as verified using a Fireboard. In cold weather climates its slow to come up to Temperature because of the large cooking chamber, and you must adjust C-11 time frame from 30 (default) to 60; and C-10 Auger Percentage Speed from 30 (default) to 50. I do have a P&S insulated blanket, and also put a felt welders blanket under the P&S insulated blanket for additional insulation. I have used this cooker in temps below 0 with no issues. I also use this cooker on average of 3-4 times a week.
I saw a comment above that Pitts & Spitts doesn't produce much smoke. Well I invite you to check out the smoke output for a Pitts and Spitts Maverick Pellet grills at 180, 225 and 250 degrees on Youtube (3 different videos), and you can see for yourself. I am very happy with the smoke output at temps from 180 to 275, and if I need more (for bacon), a smoke tube does the trick.