The fact that Perfection works 100% of the time is flawed, in about 500-600 synths of using Perfection I've seen it fail twice.

No screenshot to prove this, but I'm sure many people have had this happen before as well. Perfection is still beast anyways.

99 Progress, 1 dura, Oh what to do?!?! Perfection => Standard, 100% progress - 1 dura. Owned.