I think you can get good results from nearly any smoker you buy or make if you practice enough times.
Some of the best smoked fish I remember came from an old refrigerator that my Dad and Uncle gutted-they simply took out the plastic interior pieces, and then cut a hole in the top, made a stack from a piece of sheet metal pipe (might have been a section of gas water heater vent pipe), and then used something I can't recall for a damper. They cut a few holes in the bottom to allow air into the bottom, set a pan of charcoal on the bottom rack, and threw some sort of wood chips or twigs for smoke. The first time they used it was to smoke catfish overnight-just set it and forget it. I'll have to ask my Dad what they used for a brine, but I think it was just a salt and sugar. It was some of the best smoked fish I've ever had, and usually didn't last very long-not because of spoiling, but because we devoured it pretty quickly.
One of the things I've learned is that if you are using a Bullet Smoker in the winter, you will want to either get a barrel larger than the smoker to drop over it to help insulate it from the cold wind, which can really affect smoking times. You lose a lot of heat when the wind is whipping around. Some guys just build a simple box from plywood to do the same thing.
I would like to have a Traeger type wood pellet smokers which have a built in thermostat to control the feed/damper. From what I understand, people who have them really like them. But again, I think you can get good product from almost anything if you work at it enough!
GGB
P.S. I just rebuilt my Weber Bullet after about 12 years of hard use-the bottom finally gave out where the legs attached, but just ordered the new parts directly from Weber-great service and saved buying a complete new one.