I'm still a pretty much a noob, but if I were you I would just order some 0 nic juices and some with some nicotine as well. If you are at the point of buying some analogs, just try some of the nic juices and have them as a backup. Inhaling some nicotine can't be as bad as going back to analogs, right?
I've only tried three juice vendors so far. The first had medium thick pg/vg, the second had THICK vg, and the third had thin VG. I liked the flavors of the third vendor a LOT, but I wanted more throat hit so I ordered a 50/50 mix of pg/vg. I liked the pure VG better from this vendor as it had more of a FULL smoke feeling rather than JUST a throat hit and little vapor.
I guess pretty much any juice varies from vendor to vendor?
(I'm still guessing that you are missing the nicotine as well)