That looks... amazing.

Wonderful pictures! Love seeing the red-eyed helmet on there.
Trust me guys, this piece worth to get, even though you already owned Mark 42 probably...
Mark 42 or 43 fencesitters, jump into the Mark 43 bandwagon now!
A quick summary on the fixes/improvements done on Mark 43:
- Double ball joint on neck, makes it better for head articulation, turning sideways, looking up, etc...
- The normal head LED window panel has been fogged in white instead of transparent, probably diffusing the lights.
- The chest Arc Reactor has been finetuned; the whole piece is made of translucent plastic, Mark 42 has the outer triangle made of solid silver color.
- The sideskirt is now liftable; as shown in the official picture.
- The rear bottom piece is now made of hard plastic, instead of Mark 42 rubber piece, which is still prone to red turning to pink.
- The button which release the leg section is now able to lock into once you release it, making it no longer accidentally slide back into the groin section.
- the upper thigh articulations is improved; you can rotate further and much easier than Mark 42, for the sake of ground pouncing pose.
AND the most important part...
- The shoulder articulations definitely have improved! no longer afraid of being too loose or too hard, you can definitely lift them up in 90 degree position, and the bicep are much easier to rotate than before. the elbow articulation has improved as well, you can go up a bit more now.