I have a pair of the 7" ones from Rugged Ridge (same as Kragen just different packaging) and they're super bright. They've got a long range beam that grows as it gets further away. Not really very good at short distances, because it's very focused, but at distance it is fairly wide. More of a flat beam vs a normal round beam. a guy over on jf said he tested them at a shooting range and could see targets at the 500yard mark and trees and stuff past that, using just one light.
:doh:
I do like these lights, not a huge fan of their covering, i think it makes them look tacky.