Overdriving florecents is really to save money thats it.. if you want to get CF
and have the funds then I would go with CF
.. after looking into overdriving florecents and reading way too much about it.. I ended up tripping over how they make CF
. Some of the ballasts are the same! They usually overdive 4 foot bulbs by the way.. some of the links are to the series ones but for the most part they are just plain 4 footers.. and to zacdl's questions.. the expected life of the bulb is about a year if its fan cooled if not it can drop by half.. and they are a certain wattage for a reason because of the life hours advertized by the manifacture.. if you got really bright light out of you new fixture you would think there was something wrong with it when the bulb doesnt last as long as GE said it was suppose to..