I also do a two pass, 90% of the time, and feel around with freshly wet fingers for spots that need a touch up. Normally this is every other day.
I do three passes, going for perfect BBS, only for funerals, weddings, and the arrival of a new member to the herd. Three passes is the limit of what my face will tolerate. It usually results in an ingrown hair or two. The avoidance of which, is one of the reasons I have always preferred shaving with a straight.
Ed
quicknicker