No shit, it's one of their finest tunes. Nine Feet Underground, though, definitely is one of the most amazing prog epics out there, imo up there with Supper's Ready and A Plague Of Lighthouse Keepers.
Also if you want to expand beyond Grey and Pink, I highly suggest the live album Live At The Fairfield Halls, it has no Grey and Pink tunes but their best songs besides Grey and Pink, and the sound and performance is absolutely amazing, to say the least.
Abigor - Soil Of Souls