Sorry I'm very late - couldn't find my cufflinks anywhere.
Avoiding the eccentric's choice, 2 under Oscar Fried, I'd choose 6 under Mitropoulos, late 50s,
1)Because it's my fave symph
2)because the Mitropoulos is amazingly electric
and 3) Because in my world, whenever I play 6. dramatic things happen in my life; so I'll be saved soomer and be able to get back to the rest of the ouevre.
Ivor