Too hard to answer! But I'll have a go.
RY4 is very popular and I like it, however I got some VG from HC and it's very weak in flavour.
Caramel is also good if you like sweet stuff.
I've tried a number of fruits but Bannana is the only one I go back for.
Menthol is always good to have on hand - dont need a high nic to get a good
throat hit either.
In the tobaccos - Virginia for me, sometimes MLB. Can not stand 555, even a small amount mixed with something else. I tried to like Hilton but couldn't. The Dunhill and Kent I have are weak and leave an aftertaste - maybe something wrong with them but I'm not buying more to find out .