I couldn't rank my picks, too hard. This is my list for cool initial first hits, no matter how long it took to arrive.
1989, 2011, 2013!!, 2015 Cadets
1995, 1996!!, 2010, 2015 Scouts
Frameworks , 2006, 2010 Cavies
1989, 2014 SCV (1989 was a great year for DCI)
2009-2015 Blue Devils (mostly '12 and '14)
2010, 2015!!, 2016 Bluecoats
2016 Blue Knights (sounded VERY hard to achieve. I'm not sure if there's something as atonal and nightmarish than this, twas unique.)
2010, 2012, 2013, 2016!! Carolina Crown
I know I'm missing a bunch of stuff, old and new. I'll update when I think of more.