I'm normally a SF supporter but, at those prices... I say TK10
I think both companies will back their products 100% in the event that they do fail. So I think your concerns about quality are not really that significant. Fenix has a representative here on CPF, who posts regularly. AFAIK Surefire does not.
Can I suggest a third option?
You can get a 6P on Ebay for around $40. Find a seller willing to ship to your country and youre in business. Drop in a malkoff M60 for $60 and you'll have an outstanding product. I am pretty sure Eugene ships internationally. IMHO that is a better option, if you want the quality-feel and heft of an all aluminum light.
G2L($122) -vs- TK10($78)... tough call, I'd go with the Fenix
Malkoff 6P($110) -vs- TK10($78)... pick em':twothumbs