Can someone enlighten me as to the differences between aftershave balms and just plain aftershaves? Is it alcohol/no alcohol? Creamy vs. not? And when would one want to use balm vs. the alternative? I've read where some said it depends on the season of the year, others on how sensitive your skin is, and various other explanations. I'm beginning to think its all just personal preference, but if so, how does one determine preference, short of buying a bunch of aftershaves that then may or may not be used.