Yeah those three are the very elite. I take Durant too because of his age, but compare their careers and its hard to say Paul isn't an equal, if not better player. But Paul is 28, Durant is 25 and they're so close as far as team impact that I'll take the younger guy for those extra three years.
Dwight belonged in this discussion three years ago but doesn't anymore. There is a whole slew of second tier players and I'd say Davis, George, Kyrie (considering this shitty start of his an albatross) andmaybeDrummond (i don't love him but you can't deny his production so far) have a chance to make it into that elite level. The other guys (Curry, Love, Harden, etc) are already old enough we have a pretty good indication of what their peak will be.