Yes Mountain Oak is also quite good, wasn't sold on them at first, but steeping definitely improved their NETs like Full Virginia Flake RY4. Sunday Morning for me was good right away, but is improving daily it seems.
Haven't tried the Plume Room or GoodeJuice, but both come highly recommended as well by many.
Vermillion River is worth a try, one of my other favorites (HHV being my favorite so far, echoing the above by XFoo and Buggs). I like KY Premium Blend, their KY Premium Applewood (also have maplewood and cherrywood, but haven't tried these yet) which is basically apple flavor added to the Premium Blend base, and Poker Blend has become good, imo, after a little steeping as well. These are NETs, naturally extracted tobaccos, and are usually pipe or cigar flavored tobaccos compared to cigarette-style.
Ahlusion already mentioned by someone above, just now starting to try a few of theirs, I personally like their Vurley the best so far of the three I've tried, and Blue Grass Burley is pretty good as well.