Lighting Survey 2012

My lights -- not the old ones, but the new ones I bought in 2004 -- finally crapped out, so I'll be getting some new lights in the very near future, and so I was wondering: what lighting systems do you use, and what do you think of them? How powerful, HID vs LED, lumens, run times? What do you all recommmend?

(I have a particular brand/model in mind, but I don't want to prejudice anyone's answers so I'll keep that to myself for now.)