Yo Deadfish,
Make sure you spend some time in John Wolff's room and take a hard listen to the Classic Audio Reproduction, Hartsfields. JBL design, Tad driver based. Stupid expensive at $17+k per pair but if the room sounds half as good as it did back at MAF with the DeHavalland 845 mono's, you are in for a serious treat. These are what other horn loaded speakers aspire to sound like.
Only notable exception are Dr Bruce Edgars Titans and Seismic Sub. Those were marvelous too.
Try to catch both of the rooms when they aren't too busy and see if they'll let you be Lord and Master. Crank 'em up. You'll experience dynamics like you'd never believe possible...... even comparing them to your A-19's.
You may want to wander by Terry Cains (Cain & Cain) room and give a listen to the Ben's too. Those should be fun.
Sure wish I was there......