hi sortof new ot zbrush 4 and wondering can someone tell me the difference between the 2 and what is better for sculpting thanks
one is made of quads, with 4 3 edges verts in the “corners”…basically a cube/box with a sphere deformation applied to it.
the other is generated mathmatically and has the initialize options in the tool panel during creation so you can change around how it functions, but it has poles at…well…the 2 poles 
Neither is any better than the other, they both will serve you well. Most of the time though I just use the quad one so I can avoid the poles…but it really is a matter of preference really.
ok thanks