I don't like the shape of the shoulder things Samus has on the 3rd sprite. It also doesn't seem to fit well with Mario. I based my designs on Super Metroid Varia Suit Samus. If there's a winner it will probably #2. The shape and outline on that sprite is nearly perfect. Although the shading on the should thingy could use some work though.
Although they don't fit in very well in my eyes because they aren't very clean.
Although they don't fit in very well in my eyes because they aren't very clean.