I'm a bbq/smoker.
The Weber Smokey Mountain is hands down my favorite low-tech smoker. It comes in both 18.5" and 22.5 inch grills. I have the smaller one and I can cook about 8 racks of ribs at one time. It's all charcoal and smoke woods (your choice). I use hickory chunks mostly. It holds low-n-slow temps great for periods up to 10 hours. It also has a water pan to moderate the temps and keep the meats moist. There's a whole forum community based around the WSM as well.
Mak Grill is my choice for a high end smoker. It's a pellet smoker made in Oregon. Similar to the old Traegers, but vastly improved in many ways. Traeger is now made in China - so I'm not a fan. The Mak even has a colder smoke box on the side for salmon, cheese, etc. On the other hand, it gets hot enough to grill/sear meat so it can replace the gas grill too. You set the temp and it's good to go, but it does use electricity to run the pellet auger. The pellets come in all varieties of smoke woods.