I'm just going to say that juices, no matter where you get them, most always need steeping. If you get some that don't, then count yourself lucky. The big hints are overwhelming chemical scent or flavor and/or perfumy scent or flavor. And even lack of scent and flavor.
I've tried the 555 (rich, caramel candy type flavor), East Coast Tobacco (fruity notes that start developing a bit of smokiness after a full week), Coumarin Pipe Tobacco (a richer fruity noted juice that also develops a more complex flavor after a week and seems to be getting even better in to week 2), Latakia Tobacco (rich, lightly sweet tobacco flavor that improves every day but was vapable the first day for me, with +2 xtra flavor shots) and Virginia Fire Cured Tobacco (+2 flavor shots, rich, sweet, carmelized tobacco flavor).
I haven't tried any of the others yet, but I'm betting they will all taste 100% better in 10 - 14 days. So, don't give up hope. I would offer the same advice for anything that just doesn't seem to taste 'right' to you when you first get it. That's the philosophy I follow and I'm glad I do, because I usually end up loving the juices after they have had 'their' time to steep.
Good luck!