Scalemates is great for telling you what’s out there. But I take most reviews with a grain of salt. Reviews are highly subjective, based off of the reviewers experiences, skills and prejudices, and some folks have a tenedency to incorporate AM products into a review. That is not really an honest review of what’s in the box at that point. And I really do not care for video reviews. I can read a lot quicker than the tedious pace of video reviews.
As far as the versions of the Stug. III go, A thru E had the short 75mm gun, while the F & G had the long 75mm gun. The H, AKA Stuh. 42 had a 105mm howitzer.