I've been researching new receivers and I found an interesting fact about the comparison between these two: 1. They have similar features. 2. The 1222 has a "Class D3" amplifier 3. The 1222 weighs a WHOPPING 32 POUNDS!!!! (1122 weighs 22 lbs.) WOW! 4. 1222 is $529 at Newegg, free shipping 5. 1122 is $379 at Newegg, free shipping 6. Both come packed with excellent features and reviews. What is the advantage of a Class D3 amp? Is the amp where the extra 10 lb is? Thoughts?