I don't have any preferences either. I use whatever is in the shower.... Body wash, bar soap, or aveeno daily scrub. I will use shampoo if I skipped shaving for a few days.Like tobler1, I have also heard that shampoo is better for the scalp and doesn't clog pools like regular bar soap.I think scrub is good for those hot sweaty summer days. scrub is geat for removing dead skin which helps to even out skin tone.