Quote - do you guys use the setup room autogrouping feature for a2 or do you use a third party utility like autogroup or objtocr2?

The auto grouping feature is actually not bad and does a fairly decent job. But not as good as a keen and detailed "human eye" can do.  No matter what "auto grouping" utility you use, you will probably still need to go back and check/edit things. Areas that have only a couple of rows of polygons (like the area between the hip, or the collar areas in the chest) will always need touch up in any automatic grouping solution.

That being said, I like "Auto Group Editor" by Mark DC, because it allows you to make symmetrical selections and then assign each side to a selected body part.