I animate.

I use Posette and Dork.
Natalia and Natrixa and Natalia 3.
Dina and Dina V
Don and Judy 
James and Jessie
Miki and Miki 2
Terai Yuki1& 2
Antonia
Angela
Neftoon Gal
The Girl 1,2, 3
Staci
Rikishi
Mayadoll
BJDoll
Tuyuko
Apollo Maximus
Ba0
Chery Anime 1 & 2
Eroko
Vicki 1-4
Mike 1-4
Millkids.
Mill teens
Cubed Babies
Kaedeko
The variants of all the above that have been created over the years. And quite a few others I don't have the notes handy to name.

Daz is easy. But since anyone can use dazspam in a can, it is also a look that is easily spotted. Variety is where you can shine. Because these meshes are nothing but tools and resources. It is up to the artist/writer/animator/storyboarder/whatever to make them -characters-, with past, present, and maybe a future. The trick, if you can't model your own unique meshes, is to assemble a large enough library of options to keep from limiting yourself. Costly, sure.$5 to $15 a pop adds up over the years. The total amount that most of the known users have invested, if dropped at once, is utterly insane. Over a couple of =decades=, no biggie.

What you use is governed by what you want to portray. I'd never use Victoria in a modern jazz dance session. Such dancers usually are barefoot, and there simply isn't enough control over the foot structure to do someone barefoot throwing their weight around convincingly. Slippers would be another matter. A lot of 'useless' meshes, though, have the toe rigging to make it feasible (Judy and Jessie, TY1, Antonia, for examples). Little things like lip biting, barefooting, hair flipping, hand talking, are just a very few things that can be used to make a mesh into something more; a character. And if you don't have the variations, then all you get is obviously the same mesh. And that can and does kill stills and animations alike. With the rigging variations in different models, I get different strides and motion patterns from the exact same bvh file. Just scaling VIcki doesn't change the rigging, so you get the sameness of motion. With careful scaling, most dynamic clothes are pretty univeral. Ditto with dynamic hair.