Communication: it helps when a vendor is on Reddit, but I had great and helpful interactions with VapeRageous, both on Reddit and through email. Quick to respond, helpful, and not too serious - I like!
Speed: we're both on the East Coast (VapeRageous is based out of NC), but I received the juice in 3 days.
Product Quality: Descriptions are given, which are accurately issued. I don't particularly think this is juice-specific (i.e., doesn't warrant a separate juice review), I did find that their juices were more consistent than other brands/vendors.