FranticFred, I can tell u now that the old model 300w is an amazing light for the price, I got mine for $139.99 shipped, went from a 2000w hps/mh setup to cfls due to high temps, that light has done absouletly amazing compared to either hps/mh or cfl, look at my posts a page or so back, I have an auto under the 300w growing inches both in height and width daily, it's been amazing! I have both the MarsII 400 and the reflector 96x3w lights brand new still in the boxes, I am eger to hook em up but being the 300w old model is doing so good I have left them sit in the box for now, I would recommend any of the 3 lights but if u like me n only grow few for personal use I see the 300w would do great on its own, and for the price it simply can not be beat! I will never use hps/mh again and cfl only for starting seedlings and I figure if the light does only last a year or so, still I spent less than what a years supply of bulbs cost for hps/mh!