V3 was just a morph for unimesh 3.
V4 was just a morph for the unimesh 4.

Genesis 1 mesh came with DAZ Studio 4.0 Pro Edition.
Genesis 2 mesh comes with DAZ Studio 4.6.2.118 Pro Edition.
There's a Genesis 2 mesh boy and girl morph.

Genesis 1 polycount is around 18,884. V5,M5 is just a morph you buy for Genesis 1.
Genesis 2 polycount is around 21,098. V6,M6 is just a morph you buy for Genesis 2.
So they added some topology to Genesis 1 to make it better and named it Genesis 2.

Don't know how they done the genitalia. ya half to buy the pro bundle to get that.

V3 had triangles in it and a high polycount so ,not acceptable for high end App's.
V4 was 100% quads but had a high polycount so DAZ was trying to make a mesh for Poser & highend app's,
but an around 60,000 polycount's not asetable for high end App's.
V5 and the new DAZ Studio with SubD's works like high end app's. First Vicky that I would use. 
Thay wanted a little more topology in V5 so they made V6.now where up to date. 

DAZ studio gets updates from time to time ,newer versions.
every version gets farther away from V4.
V4 was 15 years out of date the day she was released 10 years a go.
Since DAZ seems to be making every effort to be up to date with highend app's.
I doubt V4 is a top priority for DAZ.

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