OK, as promissed, below is a link to a short video I made (from my phone) of my car with running water on the bonnet, remember this is exactly 1 week later and I even ensured that I did not wash my car at all for the entire week to perfom this very test.
The drivers side of the bonnet has Auto Finesse spirit on, which cost around £90 per tub.
The passengers side of the bonnet has Collinite 915 on, which cost around £25 per tub.
You will notice in the video that the Auto Finesse side holds alot more water and holds "bigger" beads of water, where as the Collinite 915 side, the water hardly holds to the car and the beads are alot smaller.
I think we can safely say which is the better wax.
Video link (sorry about the wind. Joys of sunny Wales)https://www.youtube.com/watch?v=12nmoLcAM84Some picturesAuto Finesse side915 sideFront end view, Notice how the AF side has larger beads of water...
And the same front view last week...