In a system prior to my current one I ran all Audioquest Sky I/C's and Volcano double bi-wire S/C's. The Sky's had 72dbs stock, I tried increasing to 144dbs but the sound was not to my liking. I also tried 36dbs and then 48dbs but felt the 72dbns had the proper amount of "air" for me. The Volcano's also had 72dbs, I increased each bi-wire to 144dbs and liked this configuration better.
If you're wanting a more open airy sound try 72dbs.
If you're wanting a more open airy sound try 72dbs.