Did read up on the Apex Pinnacle a little bit, my gosh @ the price however.
I'm already a bit skeptical buying something nearing four grand without having listened to it before... ten? I'd need to have one serious audition.
My headphone setups have generally been less serious than my speaker setups, but that's because I've always been rather happy with my little X-CAN V8P paired along with the HD-800's.
Still leaning towards the Woo's at this point however (:
