You will like the #3. I love mine. Just go easy on the wood for the first couple of smokes. Smokin-it smokers are more efficient than the masterbuilts for producing smoke flavor.
The #2 will be heavier than the bradley but it is moveable. I have the #1 that I take camping and it is easy to move and weighs about the same as a masterbuilt I use to have. My #3 is on a dedicated moveable stand so I don't have to pick it up.
Get the #2, you will be smoking so much you won't...
If when installing the new thermostat you were very careful not to kink the capillary tube, move the thermostat bulb away from the back wall of the smoker. I had a cookshack that wouldn't heat up and had to do that.
i cook my ribs for 4 hours then wrap them in foil adding a mix of melted butter and honey and some brown sugar to baste/cover the ribs. Let them cook another hour. I do this with my #1. My camping partners say they're the best ribs ever.
Apple chunks are one of the most mild woods. I usually use a mix of apple and cherry.
To start I suggest you get a scale and weigh your wood. Start with 4 oz of wood. You'll think that isn't very much, but you can always add more next time. These smokers are so efficient, you don't need a...
Windex may work since it is done recently. Otherwise like Old Sarge said, use oven cleaner. After using oven cleaner, spray and wipe with vinegar to neutralize the cleaner.