The composer's 1960 recording, raggedy as it is, was the most important record in my musical development, period.
I've never liked any of the Boulez recordings. They sound strangely smooshy and soft-core to me.
I like Dorati, who's constantly interesting, even when I don't like his tempi.
There's an Abbado on DG that isn't bad, coupled on some issues with a great Petrushka.
The Markevitch, if you can find it, is never dull.