In short: not good. Forgive me if everyone already knew this, but I'm new to the hobby, and my experience with resin/Finecast is limited.
Besides the obvious problems associated with resin/Finecast (i.e. poor molds and lack of quality assurance), the torsos and heads are noticeably smaller in scale than the pieces from the plastic Wolf Guard and regular squad boxed sets. So when I put a Forge World torso on Games Workshop termie legs and compare it to an all plastic Wolf Guard model, it looks odd.
Is this pretty much consistent with what others have experienced? So it's safe to assume I should never buy resin/Finecast/Forge World products
ever? It's a shame, because they are beautiful models in their own right.