- Adaptive Decimate Brush: reduce without fear of loosing detail http://wp.me/petJN-zY
- Snake/Spikes/curves/Muscle/Toothpaste tools are supported in surface mode too (even faster) - http://bit.ly/vMlC3X (booleans of course). It is 160 k model. To get same in voxels you need probably millions. Of course that spikes/curves are not separate pieces but merged into object - more...
- Mac OS X 10.5 or later