Sublime Package management. APT/aptitude simply rules. Due to this installation or removal of any software is a breeze.
I prefer aptitude over APT mainly because it also takes care of removing orphaned packages which APT lacks. Ubuntu is the only OS which I've personally seen detect most if not all hardware out of the box.
I would also like to add that the Ubuntu community is extremely lively, interesting and intelligent. That makes for getting support and assistance as easy as it is to install software on ubuntu. lol