It looks to me like, under MoP mechanics and rules, Destro locks get a far better deal than Aff locks. The Destro lock gets huge burst early on and, with a voidwalker holding off mobs, can quest to her silly heart's content without missing out on anything. So, for questing, wouldn't a Destro lock better than an Aff lock? Just curious.
I haven't toyed with my lock in a long time(WotLK for everything but leveling her Alchemy), but how does the Destro lock do on mana regen nowadays? I mean, in the old days, Aff let you go all day with no downtime while Destro would burst down a few enemies and waste the rest of the time drinking.