Matt,
While Pine Tree has two par 5's over 600 yards, the 5th at about 520 and the 16th at about 570, I think the 5th may be the better hole.
First, the prevailing winds are usually quartering in your face on # 5, whereas, they're usually helping on # 16.
The green on # 5 is much smaller and protected better by fronting bunkers with a narrow opening.
In addition, there are decisions to be made on the second shot on # 5, where # 16 merely requires you to hit it as far as you can.
The DZ's are similar, although there's probably more trouble on # 16.
Both are good par 5's in excess of 600 yards, with # 5 getting my vote.