I get the impression that you are not entirely satisfied with the sound, Prelude. I urge you to go ahead and bring your ASP up to revision 3.3.1 together with the C7+R5 update. This cures the tendency to sound a bit shrill on some recordings when playing loudly, and it further improves on the already very good driver integration and as well as the overall balance.
As for those who sold their Orions, I haven't seen any of them really describe their reasons, so I can only speciulate. Maybe they were unhappy with the tonal balance of the earlier versions. Maybe they just enjoy trying different things. Maybe they simply built them incorrectly and never got them sounding right.
Mine will stay with me as long as I have room for them. They are keepers, for sure.