I've really enjoyed the 3 x D cell maglite. In the US, you can purchase a 2 pack of maglites equipped with the newer Rebel emitters and redesigned body with deep reflectors. (pack contains one 3 x D and one 2 x AA maglites with Duracell batteries and holster). I paid $25 per package before Christmas at Costco and bought several as gifts. The 3 x D will burn for days if left on. Also, it will accept 4 x C cells if you invert the tail spring. I get used C cells free with 80-90% capacity remaining so I usually keep it loaded with C's. To bad these aren't distributed cheaply around the world because they are far higher quality/tougher than most Chinese lights, and extremely reliable.
The SMALL SUN ZY-777 CREE Q2 1-Mode Flashlight (3*D) SKU: S008923 looks interesting. Id like to see the pill, switch and heat sinking inside before I buy. It might make for a good mod host. I wonder if its a P60 dropin.