If I could only smoke just one tobacco... I'd quit. Sure, sure... there are some great tobaccos out there, but even Neo-Essoterica Blow your Mind Best Unicorn in the Garden of Eden is going to get boring to me if I have only it to chose from. Give me my high octane nic hitters before bed, some latakia in the winter, and an occasional non-goopy aromatic. Otherwise, I'll just grow my own.
I love these kind of threads on forums. I've never had the same answer twice. Today it's Mac Barens Virginia #1. Just-one-tobacco tomorrow will be C&D Night Train. The next day it'll be Kingfisher and the list goes on...... and on.....