Despite the fact that I am just a rookie this year, I think that I can add some insight to this conversation.
Having been a Drum Corps fan since about Middle School (I'm 20 now) I got the chance to hear a lot of corps over the years, including my share of DCA shows. Always in my heart I knew I wanted to be a Buccaneer, and this year I finally grabbed the dream.
Despite the fact that I love Bucs, and would NEVER march anywhere else competitively, I still love to hear other corps and their styles. For example
My favorite DCA show ever, is 1987 Sunrisers
I'm a huge screaming trumpet fan, and a huge fan of Latin music, so Cabs' shows have always made me smile (especially this years alumni... wow)
All these things show that despite the fact that I am a Buccaneer for life, I can still enjoy other corps and give them a huge round of applause despite the fact that I would never march with them.