Courtney Lee and I don't even think it is close. Obviously Ray Allen has had a better career, and was far better in his prime. But Ray Allen is turning 37 tomorrow, and only does one thing better than Lee (shooting) and not by a wide margin. Even in that aspect he hasn't been able to keep his ankles/legs healthy enough to be strong in the playoffs.
Now would I rather have Lee taking a shot in the final minutes if they are both healthy? Of course not. But if one of these guys is going to play 2000+ minutes for my team, I take Lee every day of the week. And the margin will get bigger in 2014, 2015...