I used DazStudio when it was in Beta and version 1. I bought several fantastic 'skins' through Renderosity for the human models I bought from Daz3D. I bought some backgrounds from Daz3d, but also built a lot myself using Wings3D and importing them into Daz Studio. I also used Daz3D's Bryce software which produces lovely landscapes and has a limited form of model building but which also allows import of models from Studio or Wings (etc). The problem was that Bryce does beautiful landscapes and shiny metal and glass, but uses a different system of rendering to the system in Studio so the same models in each looked different and so the two sets of video didn't edit together well. (One produces shiny 'ray traced' images and the other dull, but realistic shader renders)

I now use Blender which is hell to learn, has incredible power hidden away in obscure places, drives me nuts and delights me, but I avoid trying to animate living things. It is just too damn difficult.

Studio: You can make use of free or very low priced content. Studio has built into it and hidden away the very complicated part of making human or animals bend in the right places and in a realistic manner. This is horribly difficult to do well and very easy to do in Studio. Each model comes with a set of control sliders that move various parts. You can pose them, and animate those poses. It isn't easy to make it look real, but inside Studio it is easier than in Blender.

Studio is given free, usually with some content to get you started. Daz3d sell very good human models and you can get transformation packs which allow you to change their shape quite dramatically. Renderosity artists sell faces and clothes for them which I preferred to the Daz3d versions. There are some terrific artists on renderosity, (or there were back in 2006 when I bought their work) You don't have to spend much to try out Studio. With a few models and some modelling software to build the props (Walls, tables, cars) you can create scenes for still images or animated films. BUT at some point, if you are ambitious, you will feel the limitations.

Blender: It is hell to learn. If you think you are going to build realistic looking animal or human models you are more ambitious than I. It is a very skilled process. Animating them is hell too. It is laborious and I haven't figured out how to do it yet.

Building models of things is much easier. Blender has good modelling tools.

Animating in Blender has far more power and versatility than animating in Studio.

Coloring and given objects textures or applying painted textures is very powerful.

Creating flowing objects (sand storms, water, large numbers of things moving around)

Putting video into an animation (a TV screen inside a room with video running) Photos on walls or street signs.

Using live video inside an animation

Editing your video

Blender has huge power, but at the expense of being hard to learn, having things hidden all over the place.

If you want to see what I did with Studio when it was still in Beta see https://www.youtube.com/watch?v=zhH3sUzs4HM only the close ups of the faces were done in Studio, the rest is in Bryce with the flying car built in Bryce and the other objects and interiors built in Wings3D

Compare to Blender animation https://www.youtube.com/watch?v=TFeAne1jKR0 Everything built & rendered in Blender except for the small man who comes from Daz3d left over form that earlier film