Marriott has one of the best awards for 200K going.
2 RT Coach Air Tix to anywhere in the world where there is a Marriott,
7 nights in any Marriott hotel
100 minutes free long distance calling card w ATT and
25% off a Hertz rental car -- it used to be free for 7 days :-(
For 200K this is quite a great deal. I stuck with Marriott long enough to build up the MR points for this reward!
I switched to HH once I got 200K MR pts because of the new properties (Embassy, Doubletree, etc.) and the Doublie Dip.