Just a heads up, I found these also sold through amazon for $19.99.

Great review! I'm a big fan. I think the thing about the face sculpts is interesting because I do think they are really accurate to the movies, but some are just not good choices for a standard / general pose face. Mikey's is def the overall best and donnie works much better as being inspired from the first movie where he was very snarky and bantering with Casey. Ralph and Leo's while still accurate are the ones they didn't nail for me. Leo's looks like they pulled straight from the scene where he was pinned by Shredder:
http://criticsight.com/2013/datos-curiosos-teenag...

It's just such a weird expression to go with. I would have preferred they'd done one like this:
http://img4.wikia.nocookie.net/__cb20070402211416...

Especially since he was the one that always had his mask ties split over each shoulder.

Ralph's is better, he just would have been a good one to express how dark and intense they could get expression wise:
https://pbs.twimg.com/media/Btb40wlCMAAZJWB.jpg:l...

Anyways, great review. Overall, I agree they are great representations, just a few tweaks would have made them just perfect. Especially since they do have that unique wow factor that some movie based toys don't always capture.