Good: Legend Econ GHD: Solid U.S.A. made Glute Ham Developer.
Better: Sorinex GHD - 2: U.S.A. made GHD that was used at the 2010 CrossFit Games.
Best: Rogue GH-1 Abram GHD: Made in the U.S.A. The product of years of research and development. Rock solid while still being shipped in pieces to save on shipping cost.