I've used both types of bodies often, and prefer the Beauty bodies.
The Elegant seem like bendy toys to me. They're nice....enough...but seem like Gumby after a while. Also, because they're so 'rubbery', they STICK to everything and dust sticks to them, too! Also, clothing is REALLY hard to get on and off the Elegant bodies because of their 'stickiness.' I recommend them only if your doll has a swimsuit outfit and doesn't want any joints to show. I have hundreds of Volks dolls and for my own dolls (not commissions where they requested the Elegant), only keep one of the Elegant bodies for sizing purposes for commissioned outfits. (I try to keep at least one of each type of 1/6 body available so when someone commissions an outfit for a specific body, I have it available to size on ^^)
Here are some photos of one of the commissioned dolls we've done, using the Elegant body:
I am currently making another 2 dolls for commission using the Elegant body, but they are mermaids (one without a top even!) so the buyer wanted seamless, jointless bodies for them.
I don't know if you can tell from the pictures, but....because they are 'bendy' bodies they never get a really 'sharp' outline anywhere. Like at the elbow joints---always just seem like jelly to me and not truly 'natural' looking no matter how much you try to play with it. It's not terrible, but it's not really nice, either.
For the Beauty bodies, they are actually very, very nice---particularly the Beauty S, which is tall and slender. I've used it a lot and love it, as it's almost as nice as the Obitsu 27cm female body silhouette. I've found that Volks male bodies are more beautiful than Obitsu Male bodies; but that Obitsu female bodies are more beautiful than Volks females! Odd, isn't it? But the Beauty bodies (especially the S) are very comparable to the Obitsu look. (Female) They are not as sturdy or durable as the Obitsu, which can practically stand on their own, but have a really delicate and svelte look and feel to them. They can do sweet and feminine looks with their ankles and knees. They aren't as fragile as the EB bodies, too, except sometimes their hands just fall out of the socket! I think the pegs are just a teeny bit too thin for the arm hole. But a drop of e6000 or Goop glue solves that enough.
Here are a few photos of the Beauty 27cm body (not the midi which is the 25cm body):
For my own dolls, I usually try to use a Volks EBN or Volks Neo Goh Guy body with a Volks Beauty Midi body for the girl. That way the female is shorter than the guy, as in real life. So most of my 'couples' are that pairing of types, unless the girl is supposed to be taller or almost as tall as the guy.
Here is a shot of an EBN 28cm body with a Beauty Midi 25cm body: