Laley,
I'll give you Durant. I really LOVE watching him play. Aside from catching Kobe (not a fan of the Lakers -- also not not a fan -- but I enjoy watching Jordan 1B while he's still able to do his thing), Durant almost single handily brought me back to watching the NBA post-Reggie. He's the best scorer in the league, just ahead of Kobe, IMO. In about three years, after Bryant's talents have finally begun to head toward Springfield, Durant will be the best in the world.
LeBron's window of being labeled "the greatest in the world" is closing, and this season's blunder didn't help the cause. It's funny, really, that, in a few short years, it might be argued that LeBron, despite all of the adulation, praise, marketability and talent, never actually was the best player in the NBA at any given time -- considering Kobe's dominance for so many years and the rising star of Kevin Durant. This, of course, remains to be seen, as LeBron could very well win the next five championships in New York (

... not likely, wherever he may be playing, but you never know). And, of course, it's open to argument as many consider him the best now.
Interesting nonetheless.