To me the Saga has always been from the adventures of Luke Skywalker and the films that came out in 1977-1983. As well as the comic adaptations, the first two radio dramas.
To me the special editions are as much EU as the prequels and poor substitutes for the real thing.
Not so much a purist per se, since i have no problem with the prequels existing and the multiple versions of the original trilogy as long as the originals get restored to their proper place rather than treated as cast off garbage.
I can wish the special editions and prequels did not exist, but it is easier to recognize them not as Canon with the oot, or as a revised universe starting in like 1994 or so.