Kelly:
I find both Montrose and Panmure to be very good courses, with a slight nod between the two to Panmure. I'd probably give Panmure a 7 on the Doak scale and Montrose a 6. Panmure starts and finishes with a few plain holes, but the middle 12 holes are excellent as a group. If you are looking to play 36 holes in a day, Panmure is a great addition to a day at Carnoustie, as it is right next door and involves a bit of a breather from the relative difficulty of Carnoustie.
Mike