One thing that I have learnt over the years is that works written for chamber ensembles don't translate well to orchestral forces. (And equally I don't think that a symphony orchestra can play jazz, despite Gershwin, Shostakovich et al). Small is beautiful, and the clarity and precision of single instrumental voices really let's you see straight through to the composer's original intentions.
I really like more intimate concerts, e.g. when I was regularly attending both, I found I preferred the smaller-scale Cabrillo Music Festival orchestra to the San Francisco Symphony. Then I migrated to the even smaller New Century Chamber Orchestra (and then I ran out of time to attend concerts regularly).