Hi guys, thanks for your replies!
The Chaos Unlimited tapes look great so will explore them anyway, and I'll look into Paul Taylor too just in case he is the elusive DJ Paul. It's definitely not Oakenfold (!), though his Dragonfly 'A Voyage Into Trance' mix is still a firm fave of mine today.
In terms of 'Organic Illusions' I'm not expert enough to know if it's 'true Goa'; the tracks I can remember listed above are similar I guess but I'd say aren't strictly exactly the same genre as one another, so there's probably a mix of sub-genres oscillating around the central theme. What would be classed as true Goa, just so I know for future ref?
If anyone by the way can link me to the Z to A 'Next Stop Oblivion' track without the vocal that'd be amazing; the vocal version seems to be everyone's favourite judging by YouTube but to me, having heard the instrumental (which also has a slightly different arrangement), the vocal destroys a masterpiece.
Cheers!