>>533933447
4 is the obvious choice because it's arguably the best game with a somewhat healthy population.
Imagine a supply and demand chart where one axis is quality and one is population. 4 is your best bet. You could argue 3 is a better game in ideal population conditions but it's just so depleted compared to 4.
4 will also best prepare you for 6.
despite what you might have been told, V is not slop, it's actually, in its complete form, about as good of an experience as 1, which is inversely heavily overrated, but that's a seperate conversation entirely, just go with 4