The CSO is a fabulous orchestra! I used to attend their concerts frequently when I lived in Denver, and I also knew a couple of the musicians. They offer a little something for everyone: pops favorites, kid-friendly concerts (gotta introduce the little ones to some culture!), standards from every era of art-music and even a few treats for 20th (and 21st) century music fans. They have an admirable presence and involvement in the community. Did you know they have recorded several CDs and even did the sound track to a children's movie? Boettcher Concert Hall's "theater in the round" layout does provide some acoustical challenges for the orchestra, but they are generally very successful in overcoming them. It also allows the audience to feel closer to the orchestra, particularly in the 'parquet' seats. The free summer concerts they offer in city parks can be a nice introduction if you haven't been to their concerts before.