Soft hairspray is an oxymoron. I'm with you Poohtle. I have thin, baby fine, limp hair. If I don't use cement spray, it won't hold. I have to use a brand that will essentially go on dry. There are some that spray out in droplets, or obvious wetness. Those weigh my hair down and do nothing for what I'm trying to accomplish.
Tresemme has a dry mist that works well. There is a brand I get from my hairstylist (not one of the more recognizable salon brands) that works well too. She's the one who told me about the dry hairspray versus the droplets stuff. I cannot use pump sprays.
So, all that to say, "soft" hairsprays are useless to me. I use none, or the dry spray cement stuff.