The CoroSpit gets my vote because it:
1) Is simpler to build (fewer parts).
2) Dosen't use balsa for the spars (more durable).
3) Better, but not great, scale outline (the "MiG-7" is actually a scaled-up MiG-3).
4) More paint schemes (the real MiG-7 was a 1 of a kind prototype painted dark green over light blue).
5) Hey, its a Spitfire!

JMHO,
D