Like Deb, I display and play with my dolls, including the resins. With resins, you can always have them restrung if the joints are not working properly (unlike our floppy legged vinyl friends).
One of the things I love about resin is the ethereal coloring of the skin tone. That said, if you want to preserve that look, you must get them sealed if they are not sealed already.
So much depends on the brand of doll. I've got quite a mix now and my absolute FAVORITES for posing and the way they "feel" in hand are my Fairyland Feeple60. They generally can wear American Model clothing, to give you a size idea.
I have only had a few resin mishaps. I purchased a SoulDoll from overseas (used) and she arrived missing a thumb. My poor Lisette also lost half of one ear when I was fussing around with her stringing.
I agree with Deb, no stands, its not worth the risk.
I will say that I love my resins and vinyls equally. Doll collecting is so specific to every collector. I'm one of those collectors who will give pretty much anything a spin if it appeals to me, but I don't hesitate to rehome if a new doll is not my cuppa.
I hope this helps!
So, who are you thinking about acquiring???