In my humble opinion, it's an apples to oranges comparision.
The speakers you mention will sound completely different, and require vasty different set-ups. I would hazard a guess that the Maggies will not give you the dynamics you may want for HT. The Paradigms are a fine speaker, but the maggies (if set up properly) could have the edge in 2 channel music listening, if you prefer the dipole sound characteristics.
If you listened to the Maggies in a store demo, go back again, and instead of sitting in the sweet spot chair they set up for you, get up and take a step to the right or left. The image and sound quality will totally fall apart. Not that the Maggies are bad speakers, but ribbon technology has some major drawbacks to accompany its advantages.
This may be a real disadvantage if you have the guys over to watch the latest blockbuster action film. The guys sitting on the edges of the couch will hear he movie as if they have pillows over their ears.
