very nice... i would request however that you dont lock in specific detail to muscularity leave room for changes , keep edgeflow fluid in the topology , a few extra loops are a better solution than outlining details , i agree with Wiz that we are past the polly count crunch, this is IMHO mostly a game/other platform compatability issue does not apply to poser.. rigging in poser is much more flexable than other programs such as max or maya where poly count can lead to major headaches, if you are wanting a cross platform figure ignore this request... if however, you are reaching for the optimum Poser figure leave room for future developement with a higher density mesh with extra  loops in key areas, so as much or as little detail as desired can be added,or easily subtracted, there are plenty of us out here who appreciate the human form in its natural state who are looking for common everyday features, instead of another over developed idealised depiction of "perfection",... change ability is the key...

beautiful sculpt

:O)

Y'all have a great day.