I put effort into modeling with efficient polygon use, and make much use of displacement to add detail.  I often use (strictly convex) n-gons in place of several quads/tris.  I place a premium on low poly dolls, especially if they can also bend well.  But even with all that, many of my scene projects are resource-massive.  This scene is mesh (no backdrop) all the way out to Glaseye's sky dome.  I still intend to add two more filler tree species, plus a hedge/shrub species.  There are eleven dolls and two animal figures here, although squished down to this size you can't see them.

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Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5