I've tried a few different tobacco's and here are my thoughts.
DK-TAB (Vapables - out of business) - Nutty, subtle, good all around flavour and TH, and probably my favourite.
Flu Cured (CDN Vapor) - Sweet and smokey is about all I can use to describe this one. Has an odd aftertaste that takes some getting used to, but if you need a kick in the throat to wake you up in the morning this will do it.
Turkish Blended (CDN Vapor) - I thought this would be closer to the DK-TAB, but it's not. It's not as sweet as the flu cured with more of a hay taste in it, and I find it pretty dry. Also has a very strong Native or american analog smell. Not sure I'm 100% sold on it yet, but I got VG Juice for this one and use it almost exclusively for dripping on my eGo.
Do More Eh (Vapables) - This one tasted exactly like a freshly cracked pack of DuMorier smelled. It's very dry and has a strong hay flavour, OK TH, but I found it great mixed with belgain waffle to mellow it out and give it a back-note of vanilla.
T5 (CDN Vapor) - This actually tasted a lot like the Vapables DK-TAB - Slightly dry, nutty, easy all-day vape. The flavour isn't overpowering and the TH is just right.
Blends:
RY4 - I've tried 3 different vendors for this and they are all about the same. Some slightly sweeter, some have more TH, but it's pretty reliable that when you ask for RY4, you get an RY4. caramel/tobacco blend.
Dulcis (VaporTalk) - This is, and isn't a tobacco. It has tobacco undertones but it's like a rich thick caramel/butterscotch with huge amounts of flavour, wonderfull exhale, and perfect throat hit. Very hard to describe or put a finger on all the complexities of this juice but they do an awesome job over there. Too bad they're in Cali