New Pens ...focus champs?

Just looking for opinion on the focusing accuracy of the new Pens. I know they are fast ..but are they accurate?

Used to be many DSLRs were fast enough, but there were a variety of focus issues from time to time.

May still be true.

I just did a casual (free) wedding with the old EVolt 300. It was very frustrating in dim to moderately ok light to get a lot of focus errors. Love the old brick ...but looks like she is getting a bit 'long in the tooth'.