Instead of the U2, think about the WolfEyes with the Cree drop-ins. Hella more light out of those things (with more runtime) then the U2, and from what I hear the WolfEyes are still quite durable. Look for a member "Mike @ PTS" for questions about which one gets the best throw - but with the discount there and the prices of the WolfEyes versus a lot of the SureFire - you might be able to find twice the flashlight for half the price.
Let the flames begin!! cuy, I know you obviously lurk - but be careful about ever questioning the value of a SureFire in this forum, people will come to eat your brains out for even suggesting it - but I'm trying to give you the best info I can, and after spending the last couple of weeks looking at the WolfEyes and reading reviews on them...they seem like really nice lights.
For that matter the Huntlight might throw better then anything you have had previously:
http://www.flashlightreviews.com/reviews/huntlight_ft01xse.htm
...and the Lumapower M1 throws better then that:
http://www.flashlightreviews.com/reviews/lumapower_m1.htm
But the WolfEyes are more tactical and you might like them much better then the Huntlight or Lumapower....
Start here:
http://www.pts-flashlights.com/category.aspx?uid=1-99
Then if you go back to this thread, you see a lot of questions answered about the WolfEyes:
http://www.candlepowerforums.com/vb/showthread.php?t=168288
After that, maybe you can decide - but you don't have to get a SureFire just because everyone says they're the best. They have been slow to adopt new technology and it makes some of the WolfEyes lights with the Cree modules a better value perhaps. You can even use rechargeables in the WolfEyes (but get the ones which take CR123s in case your in a pinch in Iraq with no access to power around for a while).
Have fun in your search, it'll be an arduous one I'm sure...well, for someone like me it always is - but I research the crap out of something before I buy to make sure I get the best value. That's why I say, at this time....I think you may be able to find a better value in some of the WolfEyes lights then the SureFires.
Bombs away.
EDIT: Look up Lumapower MRV - crazy throw it seems from what some are saying in this thread:
http://www.candlepowerforums.com/vb/showthread.php?t=168509
Looks like a hellofa throw monster too.