The George Pal machine is still one of my favorites! It has a presence and alien grace which contrasted so well with the Earth technology.
The last photo has what I call the 'Jeff Lynn' version from the album- I like the older style dating of the design but it does violate one of the books descriptions- Martian technology never developed the circular hinge'wheel. They used a series of curved sliding plates to achieve the same function.
I love the copper tome you used for the hull- some builders make it too shiny and it ruins the scale.