You should look into the Vandersteen's Don. They give you the advantage of a dynamic speaker, but also the sound of a point source, which is what you are used to with Maggies. A friend of mine has both and LOVES them both. He's a jazz drummer and knows his music. Even teaches at Julliard.
They are different speakers, but the VAndersteens are a much easier match for electronics. It's about which ones depending on your budget. Since you are looking at the 20.7's, you can swing the Quatro Carbon Fiber Tweeters I assume (similar cost). I just got mine from Audio Connection and they are killer. Johnny knows how to set up a system and he also sells the Maggies, so he can go over the similarities as well as the differences. They are in NJ, not sure where you are located. It's just another option. I know many of us who enjoy Maggies when set up properly, but want a dynamic, so the Vandersteen's were a natural.
Keep us posted.