Conditions affect this. Wet, no roll, you want more loft. Dry, lots of bounce, you want low loft.

Then there is the wind. Hit a high flyer down wind, but also a low running draw in wind. Your swing control has an affect on the overall loft, so I pick a driver that I don't hit too high at my higest and can still draw it at a reasonable hight.

So the answer is to try them all in all conditions and pick your overall best. If you have the $$$, have 2 drivers for wind/no wind.