X3 on the hardi product. Vinyl and metal siding creates moisture , think of a plastic bag on the ground, it traps the moisture between it and the framing and causes rot. The installer will tell you the vented siding will prevent that but it only reduces the amount of moisture created, not prevent it.
I went with hardi plank and love it. 2 things to note, make sure you use the correct nail and pressure on the compressor. If the nail head is too small and your foundation moves, which it sounds like it will/does/ being as old as it is , then it's prone to the siding sliding over the head of the nail.
Next, dont skimp on the caulk if you use the planks. IIRC, hardi recommends dow chemicals product for caulking the joints. I did not do this and after 3 years I have to recaulk the joints as they almost all have opened due to the Tx heat and the active soils moving the foundation.
GL