To me, the nostalgia bike would be the Katana 1100.
And I'm not a purist, I would love a restomodded one like this one:
That one was never sold here (I think) so I don't have nostalgia about it.
The first motorcycle I remember reading about and going absolutely BONKERS when I saw in person was the Kawasaki ZX11, with the claim of being the most powerful and with the highest top speed at the time, but if my memory serves me right, the GSXR1100 came a few years after with more power, etc. and for some reason I liked it more.