I do wish Plastic Soldier Company would get on with making some plastic SU-76s, 122s and 152s, but in the meantime, I've added to my Soviet forces with some metal kits.
For the sake of comparison I also bought a SU-76 from QRF. The photos aren't great, but here are the Skytrex and QRF models side by side.
As you can see, there are some pretty profound differences between the two. The QRF model is noticeably inferior in detail, and the proportions of various parts such as the mantlet, hull sides etc don't look right when compared with photos.The QRF model also has a rear door on the crew compartment. I have some vague memory that this might have been a feature on post-war SU-76s as used in Korea. Can anyone confirm? All in all, I think I'll stick with the Skytrex models.