Help choosing CFL lights, Dual Spectrum.

I am planning on buying a single CFL self ballasting bulb for a small stealth grow.
I have had my eyes on some 125W Red, blue and dual spectrum lights on ebay, and saw some good prices, I am particularly interested in getting Dual Spectrum lighting, but from what I've heard, Dual Spectrum lights in the 125W range are insufficiant for getting adequate sized buds.
I have come across a 160W Dual Spectrum CFL bulb with hanger for £38 (incl. postage), seen here, included with it, a 12 month warranty.
I would like to know of anyone's experience with this sort of lighting and tell me whether or not this is a good deal.
I don't plan to grow a large amount, so I don't believe that having a hefty amount of lighting would suit what I plan to do, and I plan to consume the least amount of energy possible whilst achieving quality buds.
Any sort of help or recommendations are appreciated.
Thanks .
This is my first post on this forum, and I must say I find the information offered in this site very helphul.

I am trying to do the exact same thing yet so far no one has answered my question. Good luck dude.

That should work for a small enclosure. Tiny scrog and you could pull a few nice dense nugs from it.