I understand that Boss have changed the op amp in the DS-1 several times. The current ones are said to sound better than those from a few years ago. I've had two from recent production with no complaints. I've never owned an MIJ DS-1 so can't comment on those.

The only "auto" on a Crybaby is switch on and leave it in one position. Mick Ronson used to do this feeding the clean signal to one Marshall and the fixed wah to another. Very cool tone if you happen to have two Marshall stacks and very understanding neighbours