I give them all a 7.5/10. You really did nothing on them... in my oppinion. It looks as though you were copying a tutorial on each one of those. And I believe they are all filters only... which in my oppinion don't look great. Especially now, since they are being the next whored out style...
^ first 2, 8.9/10- Awesome job with bg and blending. last 2, 8.2/10- bg is weaker than the first two.
Top - 8.5 It looks great, but it's a little too small for my tastes... Bottom - 7.5 I don't like the feel of it, although thats just me. EDIT Contagion's Jesus sig - 8.5 dude thats actually pretty damn trippy and it looks good the text needs work though..
smudge is mess on the first one so 7/10 i like the fractal look in the bg a lot and the render with it 8/10 bison one is ok the squares take up the empty space but are distracting from the focal point 7/10 these two and first current
7.5 looks pretty cool and animation is good but might want to make it shorter in height 8.6/10 gotta love the sprite animation =)