If I'm interpreting your question properly, I'm taking the fact that you're saying "bang for the buck" means that you're ok with it not being a Surefire branded flashlight. If you are indeed looking for a "Surefire 6P-style" flashlight, there's plenty out there. Solarforce (SF) out of Hong Kong makes a very good clone of the 6P and in fact it is parts compatible with Surefires (6P, G2, C2, etc.). People here usually go to places like Dealextreme or Kaidomain for Chinese made flashlights, but neither carry Solarforce for some reason.
Anyway, a Cree Q5 bin equipped Solarforce 6P clone can be found from Ebay dealer hkequipment:
http://cgi.ebay.com/Solarforce-L2-C...581317QQihZ012QQcategoryZ106987QQcmdZViewItem
Or if you just want the less pricey Xenon version of that and get a Malkoff drop-in:
http://cgi.ebay.com/Solarforce-L2-X...580897QQihZ012QQcategoryZ106987QQcmdZViewItem
The Solarforce L2 has a tactical-syle head and can run on 123 primaries or rechargeables.
Dealextreme sells this Ultrafire model with similar styling, but I'm not sure if it is parts compatible with Surefires other than the P60-style lamp module it uses:
https://www.dealextreme.com/details.dx/sku.2672
Either way, there's plenty of options out there. But I think the two I just mentioned fall within what you're asking for in terms of a "Surefire6P-style best bang for the buck" flashlight. :thumbsup: