Yeezy Supply has always been the most reliable for me. I've been able to cop every time I've tried on YS. Only downside is staying up for the random release time.
ADC can be completely hit or miss and footsites are a crap shoot every time for me. Don't even bother with footsites or Shopify sites at all anymore.
I just go to bed early the night before, and before I go to sleep I run the page monitor on my laptop, right next to the bed with a loud *** alert in case they drop between midnight - 5am. Normally wake up at 5 for work anyways so no biggie for me to be up that early. In the morning I'll just carry on with my normal routine, except I literally take my laptop with me everywhere (even the porcelain throne). Once I hear the alert go off I'll get my phone ready and just keep refreshing until password page is removed and stock is loaded. I'm always faster on mobile so I stick to that when placing an order.
So long as you're prepared, exact, and fast, you should almost be guaranteed at least one pair off YS. Manual has been cooking on YS the last few releases and I wouldn't expect that to change.