I bought one of the outside lights from home depot thats a 65w lights of america 6500k light. It has its own reflector and mogul socket. All I had to do was install a power cord. Another thing this bulb puts out like 8000 lumens. it was around $35
I also have a teklight t5 4 bulb unit that puts out 20,000 lumens and seems a hell of a lot brighter. I also bought a couple $12 2 bulb shoplights with the t8 bulbs and I bought a ballst that runs 4 bulbs and took the one ballast out of one light and installed the new one and bammm more light output. So then I took the other ballast and doubled up ballasts on the remaining light. before I overdrove the other light I did a picture comarison of outputs and the overdriven one was better. You can even overdrive the bulbs to 4x.