House of Liquid supposedly has some great tobacco vapes like Puros Naturales and Cigarillos Naturales, Goodejuice's offering is equally popular, though I haven't had a chance to try their blends as of yet.
(EDIT 2: Also, Mom and Pop Vapor Shop is purported to carry excellent tobaccos)
Heather's Heavenly Vapes has some amazing extracted tobacco and pipe tobaccos (their blends taste as described, and so far have failed to gunk up any of my attys or cartos) that would likely appease even someone who wasn't a tobacco vaper, and Want 2 Vape's extracts and regular blends are quite tasty as well. Very vapeable, and I haven't had a bad blend from either vendor yet.
The Vapenstein offerings from Want 2 Vape are very impressive, if you want tobacco with a serious punch, give them a try.
I've tried London, Stockholm, and Louisville and none has come close to disappointing me, if anything I have to step away from them after a while because of how much it reminds me of smoking (this isn't a burnt ashtray taste, this is pure, honest-to-goodness tobacco). Stockholm is a take on snus, so the flavor is different and alluring simultaneously.
I'm sure there's vendors I haven't mentioned, as I haven't really tried them all. But heck, I have been very happy with my experiences with HHV and W2V. Another up and coming vendor of note is The Plume Room, offering a different take on naturally extracted tobacco with some unique blends that I've never seen before.
EDIT: Also, Want2Vape's Atty Refresher is an indispensable product if you drip. It even works to clean the coils on a CE2/CE3.
Made my i06's fire up like brand new after months of use.
All things said, there is a
serious flavor difference between vendors that use flavorings versus those that use natural extracts. You will know it when you taste it, believe you me.