I think I shall have to get 'Retro Future'. After all, I was there at Shrewsbury in '98.
However, the set was precisely the same and in the same order as 'Omnidelic Exotour', with the exception that 'Here We Go' was played at Shrewsbury. 'Subterrainian Omnidelic Extour' is the same tracks and running order as 'Omnidelic Exotour' except it doesn't include 'Dislocation' and there are differing versions of a few songs, such as 'The Quiet Men' and 'The Noise'. 'Omnidelic Exotour' has the better versions in my opinion.
So it will be intriguing to hear that show again after nearly a decade, though even many who weren't there will get a strong sense of deja vu.