Vape pig (formerly okey smokey) do the most realistic tobacco juices I have come across. To me NET stuff - even though it's made with tobacco - doesn't really taste the same as a smoke.
Indigene and Firewater juices by manabush also have that satisfying tobacco vibe, mostly with other flavours added in (though there is a straight tobacco indigene version).
Druid's brew also do a nice straight tobacco flavour, but I can't remember what it's called. There is a menthol one too so don't get confused with that.