I think you're fine at either temp. But I haven't done a Pilsner yet. I'd go with the one that has a more constant temperature. Unless you get a special thermostat for your fridge, it will probably be +/- 5 degrees during its cycling.
Planning: Agave Witbock, Raisin Beer
Primary: GF Hazelnut Stout
Tertiary: Cranberry-Pom pLambic (est. bottle date: 03/01/08)
Drinking: Cab.Sav/Merlot Wine, Grand Cru, Hazelnut Stout #3, Ordinary Bitter