One thing worth noting- most of the guys raving about the 5.0L after making the switch had light bolt-on 3Vs and now have light bolt-on 5.0Ls.
I test drove a 2012 awhile back, and going from my blown '05, it felt just 'OK'.
I did also ride in a bolt-on 2011 and was very impressed- it seemed to have a bit less low end then my car, but the top end was exceptional for the mild mods.
The Coyote and it's siblings absolutely kick the shit out of anything Ford released previously, but whether you really make the switch depends on all the stuff I laid out in my last post. It's not worth it for me at this point. I've got just over $20K total (including vehicle purchase price) in my '05, it still has low miles, and it's still plenty quick enough for me. In a few years when they're down in price I sure wouldn't mind having an 11+ with a blower on it though.