There was a real good article on right hand technique published in Vintage Guitar magazine a couple of months ago. It outlined the 3 styles of technique, the pro's and con's of each method and the various artists who used each.

The 3 techniques would be 1)fingers, 2)wrist, 3)fore arm. Out of the 3 fingers is the hardest to master, wrist the easiest. I'm a true believer of the forearm technique. To make this technique work for you you must learn to keep your arms very relaxed when playing, if you start to tense up you will lose the momentum of the arm.

To rebuttle the ist response who brought in physics while defending the finger technique, this person did not take into account that the fore arm muscle is about 3000x the size of the finger muscle. If the fore arm technique is performed right, you will never have to worry about fatigue.