> , apt is probably the most advanced package manager currently.

Apt is certainly the best package manager in my opinion. I haven't used rpm based package managers in a while, but I doubt they don't have feature parity at this point.

I think the magic ingredient of apt that makes it work so seamless is the thousands of diligent maintainers behind it. That's the "feature" that none of the other packaging systems have at the moment.

I also have a deep respect for the raw no-nonsense approach of the various BSDs, but every time I try running it in a professional capacity, the apt eco-system lures me back.