I prefer the first-come, first-served model. That way, if I miss out because it's 8:32 or 8:35 or 8:45am on the online ordering day, it's my fault for not getting in sooner. The allocation system was always terrible and there were many, many times that I got two bottles or something at most when I wanted 4, 6, or more.
I'm sure it will happen at some point, but I've yet to miss out on anything in the new Classics format that I really wanted.
Early bird gets the worm and all that. And if it doesn't, there's always another worm.