Just started smoking Best Brown a few months ago and I love it. It's an all day smoke, with the nicotine in the mild to medium range. At the same time you get full flavor out of it and there's a great underlying sweetness that is almost refreshing.
I've only had it fresh, but I'd imagine it'd age well. At the same time, unlike Full Va Flake, Best Brown seems to be perfect fresh, which is a bonus for those too impatient to age their supply. I'll be interested to hear your review, but if you've had other Samuel Gawith tobaccos and have liked them, l think you're really going to fall in love with BBF!
Enjoy,
Scott