Welcome to 3D-Coat: Part 4 (Voxel Sculpt Tools) 

I am the person who uploaded the video, but the AlienMinefield account cannot comment. I know this probably isn't the answer you're hoping for, but it really depends on what you're trying to do. My workflow and the software I use depends on what I'm trying to make. I'll assume you are referring to the above applications with regards to modeling ability. Applications like Maya and Blender are much better for modeling hard surface objects and mechanical assets. While I think Blender is a great resource for people starting out in 3d, I don't recommend it for advanced production because the software has become very cluttered in recent years with all the features they're trying to pack into it. Of all the software you listed, 3d-coat is hands-down the best at retopology and texturing. Substance Painter is more versatile when it comes to texturing, but it is considerably more advanced and has a steeper learning curve to it. The same goes with Zbrush in terms of sculpting. It is way more advanced than 3d-coat, but it is notoriously hard to learn. My personal workflow uses Maya and 3d-Coat. I use Maya to model hard surface assets and texture them in 3d-coat. I use 3d-coat to model, sculpt, retopo, and texture more organic assets like characters and rocks etc. I've used all the major 3d-sculpting software (Blender's sculpt mode, Mudbox, Zbrush, and 3d-coat) and 3d-coat is by far my favorite. It's the easiest to learn, the tools respond predictably, and the voxel workflow is very fast. Zbrush is more advanced but if you're starting out, I would strongly encourage you to go with 3d-coat because it is easy to pick up and is significantly cheaper (The commercial license for 3d-Coat is $150 cheaper than the student license of Zbrush). Once you're comfortable with it and you've had a lot of practice sculpting, you can try to move to Zbrush and see what you feel. Thanks for watching, and good luck with whatever workflow you choose!

Tranqualizer20, thanks a lot. You have been very helpful.

I'm sorry you're having issues. It sounds like there may be a setting that was accidentally turned on. Can you walk me through the problem in greater detail? Exactly what tools you are using and what keys you are pressing? If you could upload a screenshot of the model when it's red so I can see exactly what you are talking about, that will help too.

I'm sorry for being frustrated, every single step l encountered an issue. I couldn't even do your first step because it didnt even work for me and no other tutuorial shows a step by step on how to actually start voxels. l've uninstalled after fighting this for a few months and something l may of needed to do is delete the files in documents. Basically making a primitive never worked. l'd hit enter, go to a sculpt tool and the shape would disappear in the workspace. It'd never stay. I dragged one from default shapes and that would work but voxel tools wouldnt be available on the left hand side even when the layer said it was a voxel. I kept getting very red shapes l could do nothing with and tools like close hole and cut just...didnt respond to anything - they wouldnt detect a hole or shape. Literally a minefield of problems. I've reinstalled and trying again. I keep getting the rd highlight colour shapes and fill hole doesn't work so l cant slice. Fewer problems but l'm still getting so many. Also 3dcoat keeps crashing whenever l try and use mesh doctor so l'm using clean tool instead. seems to work?

symmetrical tool doesnt work with curves in either scultp or voxels. l had it working before now it ignores symmetrical all together. Your instancer tool used in the teeth video also doesn't work. is the program naturally this buggy and hard to use?

Hm.... One problem that I ran into when I was first starting out with 3d-Coat was when the update from 4.1 to 4.5 came out. 3d-Coat would crash very often. I later discovered that the problem was that when it updated, it updated me from the 64 bit version to the 32 bit version. All of my crashes and problems were being caused by a lack of memory. Maybe this happened to you with an upgrade from 4.7 to 4.8? Once I manually installed the 64 bit version, everything worked fine.

l do get crashes and it lags on some tools, l'll check. Yeah l'm having so many issues relearning 3dcoat. bought this a couple years ago but only used it for uv unwraping and paint. The sculpting got reworked and looks more friendly so l'm trying to figure this out but my god. It's a bit awkward.