GAT arrived and it's everything that I've read/heard about.
Staying up too late again...hard to pull myself away from the music. Simply the best my system has ever sounded.
Thanks to everyone...your posts helped me make an informed decision.
FWIW, I put in a pair of EAT E88CC/6922 tubes in the GAT. I've had these tubes for awhile now and stopped using them in the ET3SE & ET5 due to noise (rush)...in the GAT, these tubes are virtually silent. Odd.