1. i like it. the render needs a bit blending and should be darker (maybe multiply at 25% or something). i don´t like the scanlines. instead of that some careful black brushing would add depth.

2. very unique. a bit plain to me, maybe you could add lighting. and don´t blur the text.

3. render needs blending, and remove some of the highlights on the render to get more contrast.

4. your best imo. just blend the render and it will look sweet.

these are only my thoughts and i wrote them to show you what troubles ME about them.