That is good for me is the model W3D because I think than It's preferable to have a good model W3D because much models has a very good new texture but have not a new models and this create a default (for example a helmet and a face who give an impression to be the same).
While your models have not this problem, we see good than these model has her helmet separated of its face.
The HD edition has so a very good models and textures.
Comparison : Example of the soldiers of Gondor
This have the problem explained above
And this doesn't have this problem