As far as mass produced cabinets if you want to but one, i personally think the SuperCloset is the best value on the market right now. I say go with the 400 watt and no CO2. 600 watts is too hot i read. Depending where you live you are looking like 2300-2400 including shipping for a real nice unit with everything you need. If you pay money order or check they may knock some money off. At least that was the offer they made me when i called to ask questions.