I have a bunch of these. All my men have them in their trucks so they don't spend time crawling just to see something. This thing is a tube or host only and you select the drop ins or bulb and batteries. they are not cheap, but very well made for daily abuse, very close to surefire quality. I think surefire has them beat with their switches. Hell, we are not going to war with this light, so why spend another 20% on Surefire. I do have a couple of old Surefires that just wouldn't quit. Great products. Our problem is everyone wants to borrow them but forgets to return them after they are done so in their back pocket it goes.
http://www.solarforce.hk/index.php?controller=products&action=view&id=117