The ONE-PIECE machined brass tremolos are impressive -
http://www.driskillguitars.com/tremolo.htm
Whenever I look at the locking ones, I'm always impressed by how many different little bits of different kinds of metal, all with different densities, are screwed together to make one bridge. Not impressed in a good way.... I'm surprised he didn't go to two-point pivots though, I know all the arguments - six screws sound "woodier" - but I use two-pointers because they work better.