Here is a comparison between the Laforge Diversity FPV set up and the FuriousFPV True-D - both Version 1. The way we set this up was with identical antennas and goggles, being warn by people sitting side by side with the same head tilt.
My initial impressions are that the Laforge Diversity and FuriousFPV True-D perform almost identically. The True-D has a convenience factor in that it is a single module in your goggles and doesn't require any modification of the goggles to hide wiring like the Laforge does. They're both great choices.