Title says it all. For an extra $100-150 over the street price of the Pen F 40mm f/1.4, I'd gain autofocus but lose the ability to do easy zone focusing and a bit of lens speed. The Pen F 40 is quite soft wide open so I usually shoot stopped down, so the speed issue is negated, so it's somewhat of a dead heat for me at the moment. While I figure out if the gains and losses are worth it to me, has anyone else made this switch? If so, how'd it work out?