Count me as a convert too. Koerhijo allowed me to spend time with his Emotiva / HE-5LE setup, after I had heard the HE-5LE on both my NFB 15.1 and his Magni. I can second what Koerhijo said. Most noticeable was improvement in soundstage and greater bass control, tightness, and impact.
I think I will own an HE-5LE soon here. I like it much better than the HE-400 and HE-500. Really the first ortho I've actually loved.