I went through this very exercise over the last year. The La Scala-II is fantastic and paired with a really good sub is full range bliss. That being said I moved on to the BD-Oris-150 using the Voxativ AC-2.6 8" full range. I have kept the La Scala's but wow the Oris/Vox is unbelievable. Using the compact-reference base system running on a Crown-K2 and active xover. Huge dynamics with accuracy.
