I have never waited in line for a GE kiosk...ok..maybe 15 seconds...once

I have seen decent lines at the mobile passport entry point but can't compare because I never used them...

..and for "go to the front of the line"...after the GE kiosk there I have never seen a line..just the agent that sends you through to baggage claim

I.E.. in BOS there is at least 10-15 kiosks for GE and I always find one to be empty.