I just checked on pricing for the PB13 Ultra up here(sonicboomaudio) and it has really gone up since I bought, ~$2100 delivered to my door while the EP600 is ~$1900 and The EP800 is ~$2400. If I had to choose now I might have gone with the EP600 over the PB13, the extra $ for the EP800 I think is still beyond my threshold.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70