I hear Alphabay mods don't give a fuck about a dispute so I'm gonna assume if the package doesn't arrive, I'm still fucked even if there's tracking which proves I'm not bullshitting.
What's the best market to use that has mods that actually care about the disputes?
You should probably be focused on finding a legit vendor first off.
If you're more concerned with finding out whether a market sides with you on disputes, it kind of looks like you're going into a transaction with the wrong approach.
Find a great vendor on a legit market and you shouldn't have much to worry about.