Haven't heard the Richard Gray product, but the BPT 3.5 has done amazing things for my system. I have my phonostage (Manley Steelhead), Amps (Tenor Audio 300hp)and SACD player (Musical Fidelity Trivista) all plugged in. The noise floor dropped dramatically with no apparent loss of highs or any compression. It does weird things until it brakes in (about 2 weeks to complete), but once it has settled down you will hear more space between the notes (music initally sounds slower) and more solid images.
