1st looks quite nice but i don't really see a big manipulation... just some brushes to give it shade and glow 7/10 2nd Don't really like the text and it's a bit too red 7/10
1st is nice .. looks cool 8/10 for that 2nd is a bit less .. i dont like you see the render bad and you blured it way to much, 6/10 for that
first and second look good but plain: 7/10 third is amazing 9/10 on it, I love the feel fourth is ok 7,5/10 (lose the scanlines)