Well, I was born in Austria, and naturally grew up on a diet of Mozart, Haydn, Strauss Sr, Strauss Jr, Beethoven, Wagner, Liszt, Bach, etc, etc.
I'm not a big fan of Beethoven...too much booming bass and generally loud...mainly cause he went deaf.
I like Strauss's compositions (both Junior or Senior)...the Blue Danube waltz is probably the most famous.
Mozart is my absolute favourite; indeed, how could it be any different for an austrian? best compositions? all of them!
all the other germanic composers, hmm, don't like that much.
non-germanic...vivaldi and tchaikovsky are probably the greatest exponents. but as austrians will generally tell you, non-austrian composers are an inferior race.
anyway, hope i don't sound like too much of a geek.