If WOW is the goal, the DRY is hard to beat for ~$68, At the PF18 we just had (Photon Fest), it was measured at 3,300 lumens OTF...and, visually, shined at targets/into fields, etc...it was brighter than the TM11 by a good margin.
If you want the WOW to be lighting up a room of around a campfire, it would be hard to beat.
If your WOW is about throw, as in REACHING a distant target with a smaller, more concentrated beam of light, rather than flooding a large area like daylight, etc...then other lights will work better, including the afore mentioned HID's.
The WOW factor is reduced if the light LOOKS like it SHOULD be powerful.
It is increased if its a SURPRISE.
I used my Elektrolumens Big Brute (Which is, ironically, only about a 6-7" long light) on a job site I was inspecting where there was no power. The contractor I was working with there was so impressed with it and the way it lit up the entire area by simply tail-standing it, he wanted me to get him one too....NOW!!!!
I've had similar mind-warp effects on people with the 4" ZL SC600/5" Klarus XT11, they are blown away by how that small a light is so powerful.
If I take out the SR90 or TK70, etc...they EXPECT it to be powerful, because it LOOKS powerful, and while they are STILL blown away by HOW powerful they are...its mitigated nonetheless by the appearance of the light itself.
For me at least, I might stick a pocket sized light in my pocket and take it along "Just in case".
The larger lights, well, you really need to be able to justify lugging them around randomly.
Its like going out to dinner with friends with a small point and shoot in your pocket, so if no "event" occurs to take a pic of...no one knew you had it, and, you had no inconvenience carrying it...
..VS showing up for dinner with SLR's and tripods, reflector lighting, etc...because if there's no obvious pic opportunity, you appear a bit crazier.