(Some examples of 3rd Gen DAZ meshes)

 

The 3rd Generation DAZ mesh has the most realistic built in musculature topology.

It subdivides well and there is also a low res version. (Which is not simply a subD cage but has standalone topology optimized for Poser)

 

If you insist on "All Quads Only", then the 4th Generation DAZ mesh is next in line.

 

Once DAZ' new HD technology is fully established which allows direct manipulation of a subdivided mesh, Genesis 1 & 2 will have the most versatile mesh topology.

 

The only non-DAZ mesh I'd call "barely useable" would be James I, but he has problems.

Everything else is a waste of time for serious sculpting, even though of course a talented artist can create "something nice" out of any mesh with a reasonable amount of polygons.

But the 3rd Gen DAZ mesh is what currently gives the best balance between ease of use, flexibility and realism, given the current technology in Poser.