I have 3 lenses for my Oakleys:
Hi Yellow used 75% of the time
Pink Irridium used 15% of the time
Fire Irridium Used 10% of the time
When its partly cloudy and i wear the pinks, when the sun comes out, im fine....if you had to pick two, definitely the Hi Yellow and then you'd be safe with anything btw 30-60 vlt for your non- low light.
I would like to get a set of VR50 Pink and only run 2 lenses...i think somewhere in between my two irridiums would be perfect for anything but low light.