bradley doesent make a bad smoker there all good.. i do own a OBS 4 rack that was modified after i owned it a year with a PID , blower and 900 watt heater. My biggest complaint was the heat recovery was slow in comming with any volume of meat ( 10 pounds plus) that is the reason for my mod .. and Yes you could have done a lot with the 500 watt heater like i have in the first year just takes a while and got to remember not to open the door every 20 minutes ,, let the smoker handle the cook
remember Low .. Long.. Slow
what did I say?
LOW, LONG AND SLOW !!
500 watts should be plenty in most cases