Everybody seems to have diferent tasts and tobacco flavors seem to be some of the hardest to find just the right mix.
I get my DIY supplies (great starter kits) from
One Stop DIY Shop
The flavors that worked best for me as a 40 year heavy smoker are all from The Flavor Apprentice
#1. DK Tobacco at 3 drops/ml in a 50/50 PG/VG mix, it's a stron flavor so works better in my eGo-T system that seems to mute flavors. This has become my current fav all day vape, just wish it didn't take 3-4 days to steep.
#2 M-Type at 2 drops/ml, same 50/50 mix
#3 is RY4 at 2 drops/ml, same 50/50 mix
As for premixed e-liquid, I really like HC USA Mix
https://www.healthcabin.net lists it as Marl(USA Mix), this is my second fav flavor so far.
Best of luck to you and your friend.