Picking a best is pretty hard because of all the variables involved. Also, what one person prefers may not be the same as the other. For long term durability & long term slickensss, AW beats out OCW from my experiences. But when it comes to picking a product that looks the best, then for me it depends on the color of the car. On some light colored cars such as white, etc, (and even silver), I prefer the glowing wet look of Duragloss TPP & AW. On dark colors (especially dark solids), I prefer the look from multiple applications of OCW. AW & OCW both look great in my opinion, but there's definitely a difference and some people will prefer one look over the other. After a couple applications of OCW on a dark color, I feel you get more depth from the appearance and a deeper / richer looking gloss that's similar to what you get with a carnuuba product.
I just don't see a clear winner for me, which is why I use both products for my own personal vehciles. On my daily drivers that I keep outside, I've now switched to the Duragloss products to see how they hold up through winter & spring, but I still use and prefer the look of OCW on a couple of older dark colored classics that I keep garaged most of the time. Both products are super easy to use and I really like the fact that they don't stain the trim. I have not personally used the Eagle nanowax spray, so I don't have anything to say about it from first hand experiences.
