The spirals are an issue, it's just a hard problem to solve automatically. Giving the algorithm facegroups/materials to cut the mesh up into multiple parts and to mark hard edges helps, but it's still hard to get a usable mesh out without manual fixing. I use Exoside's Quadremesher (the same algorithm as Zbrush's) and it's…
This is a base mesh that I plan to take into ZBrush to get my zbrush on! I am a complete novice with ZBrush so and advice and constructive criticism would be awsome! Cheers