I think that since your straight hair falls longer on and around your face, that you would like your curly hair better if it were long enough to soften the look of your face in the same way. In my opinion one of the main reasons the curly look may seem aging on you is that it looks so short curly, it gives the impression of the "butch" type haircut that seems so popular for many ladies of a certain age. This is something I am facing right now, going from a short straight look to a short curly look and trying to find the right length for the curly look for me.
Experimenting with too many products to name here. All this great info keeps my head spinning.