I am thinking of buying a smoker this summer and haven't gotten beyond the "hmmmm, that's a good idea" stage. Anything I really need to know or consider? Any brands that are good or better? I'm not anticipating smoking anything much bigger than some bacon or pork roasts so I don't need one of those huge things that the competition barbecue guys pull around behind their pickups (although we do have a pickup...). Any input, advice, or comments would be much appreciated.