Man, we've been spoiled?
99 CL will obviously stand out, not just because of the dramatic nature of the win, but (for me and maybe my generation), it was the Holy Grail in the same way 68 was for my Dad/his lot.
91 v Barca, 90 v Palace (the 3-3), the 90 semi v Oldham (3-3 on the same day Palace come back to beat Liverpool 4-3.... my favourite ever non United game), etc....
But I'd choose the 85 F A Cup semi final
s against Liverpool, both end to end classics, the footballing equivalent of Rocky v Creed fights. The first game at Everton was bedlam inside/outside and the atmosphere was "raw" with a great game. The replay was excellent too (night at Maine Road, when City had a proper football ground) and included Robsons great long range strike, Hughes winner and Robson being mobbed at the end.
Great write up in the Guardian which looked back on the games and captures the spine tingling nature of the games...
https://www.theguardian.com/sport/t...a-cup-semi-finals-liverpool-manchester-united
"This was football as nature intended, a relentlessly attacking slugfest played by proper men in front of proper men, in an atmosphere that, 26 years on, effortlessly shivers the spine."
And I went to the final.