Radio Free Blogistan posted what I believe is a fair and pretty thorough comparison of MovableType and Radio. The commentary has been insightful with users commenting on their experiences, but growing more heated.
One thing I noticed is absent from the comparison was a mention of MovableType's support of the Blogger API. The significance in this comparison is that you can use Radio to update MovableType. Getting this to work initially proved difficult spawning one of the longest support threads on the MovableType support boards to date. Also of note, the Blogger API is somewhat limited and does not support many of the feature of MovableType.
