I found Meguiar's High Gloss and it works wonders. When I got my vx it looked pretty bad, the cladding was unconditioned, not sure if the previous owner conditioned it at all, and it would always keep water spots.

I shoulda taken a before and after, because now the cladding looks brand new, except for some scratches, but the color is 100 times better.

I bought 2 containers of it and turns out I only used about 1/6 of a bottle on all the cladding + tires, so it should last me pretty long. It does take about an hour to do the entire truck, but its time well spent.