You've tried the rest now ride the best! These Independent Forged Hollow 159 skateboard trucks are lighter than the normal stage 11 trucks. They have hollow kingpins and axles as well as a forged base plate for strength, durability and lightness. 159 trucks typically fir board sizes 8.5-8.75 in width.
The World Of Wheelcraft skate shop has a bunch of Independent trucks in stock to suit your board.