Choosing btw Helix (classic/syn) or MGX

Hey all. So, I’m a *complete* beginner to this, and I understand these three options are the best for that.

What I am less sure about are how these compare. For example, the shape between helix and mgx is clearly different, but I’m not sure what different type of feeling to expect from this. Also, I know the classic syn helix is made from different material, but again idk how that changes anything.

Complete beginning here trying to be more adventurous, sorry about all the ignorance and thanks for the help!