Daaaayum, nice! You actually found some IEMs you liked
Yeah believe it or not, I only listened to them for like 2 minutes at their CanJam booth before asking about how much it cost and stuff since they sounded so similar to the SR-207 frequency response-wise.
Literally 1 balanced armature in them, and I like them more than in-ears with 12938713098 drivers; AND it achieves a basically perfect diffuse field HRTF as shown in the individually-matched, serialized earpieces.
I asked the sales rep who the target audience is usually for these in-ears and he said mostly engineers (sound, mixing, etc.); musicians usually order more colored sound to suit their needs, hence why UE11 is basically for bass players or drummers so they can hear their bass notes more clearly. I can totally believe that.
The triple-flange tips work out for me too. Spinfit is shallow insert and itches after a while; Comply gets moist; pretty much all other silicone tips get itchy; these triple-flange ones worked for me through the entire 2-hour flight plus the hour and a half of waiting around before that.
Show price was 10% off plus another 10% for no tax basically.
The ER4-XR had too much bass for me and it seemed more U-shaped in sound because of that.