Fos,
I-93's are awsome on organ music & I hav'nt heard cellos or bass drums sound better.
I think however their main strength is in the mid range, superb vocals and instruments.
I listen to quite a bit of rock,blues & jazz. Some of Mark Knopflers well recorded (basswise) tracks with loudish guitar solos sound great.
They are however a bass reflex design. Some people prefer a sealed box enclosure as being "quicker" for rock music, but you'v got to go to something like a Duntech Sovereign to get the best of both worlds i.e. go low as well as extremely "tight". Talking big bucks(probably 3X) the cost of I-93's to impove much in that area. Now back to Aksa discussion.