who makes a good 502b host?

i was at my friends house and he showed me a superfire 502b that he bought a few years ago from ebay for about 12 bucks. he likes it better than his surefire. i want to build another p60 platformed light and want to try one of these. who makes the best 502b? his seemed to be pretty well made. the threading was good as i could tell. i've been spoiled by solarforce, so will i be able to get a 502b host that is just as good of quality as an l2? was looking at the one at manafont and thought i couldn't go wrong for 8 bucks shipped but i would rather get it right the first time instead of playing the chinese lottery. i already have a c2 ebay clone that i don't use because the threads are cut so bad on it.

thanks,

monty

I think ultrafire makes the best 502b.
http://www.dinodirect.com/ultrafire-flashlight-torch-body-battery-wf-502b.html
I prefer the ultrafire 504b