Ok I'm going to be the real odd man out here... this is what I use, the Spikes NiB coated FCG. Although the pull should be similar to milspec it's actually a touch lighter due to significantly reduced friction. With a touch of gun grease on the surfaces it is B U T T E R smooth, and only $60. I built my rifle to serve multiple roles and multiple uppers so I needed lower parts that were "good" for all roles. Is it the best, no, the Geissele probably cannot be beaten, but frankly I can't justify dropping $300 on something that limits the use of the rifle for me. With a quality barrel (Ranier Match 18") I can shoot MOA without trying very hard, and a 2lb trigger won't improve on what I'm doing for 20% of the cost at about 4.5lbs. Ultimately for me smooth and crisp mean more than light and touchy. If money matters give this a look and blow the other $240 on other goodies.
http://www.spikestactical.com/new/ss/lower-parts-spikes-battle-trigger-p-425.html