Circuit 1

screwtape

Circuit 2

dead0ne

It's easy...?
But it's also hard???

Edit: Stuck at 2-off, until I reached a critical mass of 2-offs and the solution popped out; how sublime!

Neonesque

Weird - I feel like there are several more interesting options, but in the end, the solution went against my intuition.
Fascinating level.

Nice one! I was stuck at 96 off, for a short while. And I knew where I was losing, but couldn't see how to do that part, right away.

EDIT: Oh, it's got a new record. And 'm stuck at 94. Will keep looking.