Well, I think there's a bit of cultural flexibility in this. 19 would piss me off and probably annoy most Brits, I've tried 8. which doesn't really work for me. Although 22 seems to be okay for the most part. Will have to remember to try the rest.
Not sure why they call them extra lace holes when I've always used them, but this WORKS! My poor scrawny ankles hurt all the time and doing the loop lock seems to be keeping the shoe tight. Highly recommend! ~shehears