Morgan/Percival are great too!
This is also a great loop that will have excellent color right now. The foliage is much closer to peak in the Lakes Region than has been generally broadcast. It's got some cliffs and cave side-trips that can make it interesting, and on a clear day you can see all the Whites to the north. Even on a less-clear day, the views of Squam Lake are fantastic.
Here is a trip report of the loop from winter. It'll give you an idea of the views, although all my whining about the snowshoes can be ignored. :)
Both of your options would be fantastic this weekend.
p.s. if you do the Cardigan/Firescrew trip, make sure to stop at the orchard (I think it's called Cardigan Mtn Orchard) along the same road to get some cider or an apple pie to go!