My problem with canned foam is that it provides very little slip. trying to think of which would be more slippery... I think it's going to come down to the soothing aloe or the nivea.
Since scent is a factor, I'm picking Soothing Aloe.
I would also like to point out that a few bucks can buy a can of co bigelow shave foam for awesome shaves in a hurry.