(For a while we had the cola on tap in the office via a carbonator, alongside a colleague's home-brewed beer. It was very popular.)
I easily prefer this recipe to commercial Coca-Cola. On the one hand, it does lack a certain something that Coca-Cola has, and I attribute this mainly to the fact that I don't use any coca-leaf extract; you can get this online, and it ultimately comes from the same source as Coca-Cola uses, but I haven't bothered.
But on the other hand, it just tastes better. Fresher and more vibrant. Very different from off-the-shelf cola syrups such as SodaStream's. It's closer to a "indie" cola like Fentimans or Boylan's. My hypothesis is that Coca-Cola's current "natural aroma" ingredients are no longer natural essential oils, but synthesized versions of these, although I have not been able to confirm this.