Indeed, 90db is going to give you some pretty sedate listening levels with 2A3's Crazy. Maybe no budget for Avantgarde's, but I'd bet you could find LaScala's or Khorns at a reasonable price. Anyway, don't know the scoop with the Billies. I do love the SET sound when done well. I'm sure, like any other design, if poorly executed, or matched up with the wrong gear, it could ruin your image forever of that design. That kind of misconception makes for some great deals on A'gon though!!
Marco
Marco