Since this poll started, I have switched from the APP 45A to barrel connectors:
The Main Harness has been upgraded to 6-AWG Marine-grade cable and has one primary termination using XT150 6mm to a Utility Harness which facilitates connection to the Trailer and to Panniers - both are addons for cross-country road trips and not normally attached.
The Main Harness has several secondary EC5 connectors that branch off to 3 destination sets: Triangle (Commuter) Battery assembly (L/R), optional Saddle Bag Battery assembly (L/R) for extended range, and to the Controllers (Front/Rear).
The APPs have been a RPITA for me, and since moving to barrels I have yet to experience any connection problem.
My present setup includes these...
W/O Sags, KF