I would recommend the Magnepan 1.6 since your room is adequately large. These are available on the used market for approximately $1K. They are less affected by image shifting with frequency that often occurs when placed in rooms with vaulted ceilings. Also, they follow the line source dipole principles of radiation which minimizes side wall reflections to some extent. And, above all, they sound just excellent. The soundstage is large and the presentation very cohesive. The disadvantage is that they will need to be placed about 2.5 feet out into the room (away from the front wall). They like their room.
The Meadowlark Kestrals are good also. I don't want to put these down and it is sometimes difficult to convey their sound without being taken the wrong way. So I will start by saying that you can't really go wrong with them as they are hard to dislike. However, it is easy to like something else more due to one's particular priorities. And I feel the Magnepan 1.6 performs better based on my priorities. By comparison, the sound of the Kestral is a little flat or undynamic. The bass response seemed anemic in my room. The overall sound was just as cohesive and seamless as the Maggies though. But, I always felt as if I was missing some excitement - that perception of the real venue which I get with the Maggies.
So it is a matter of preference. Both good speakers - just another alternative.