I've got some tins of BBF in the cellar, but I haven't tried it yet. I am a big fan, though, of SG's Brown Flake. Apparently, it's not the "Best"
but it's a really enjoyable VA/burley flake, available in both scented and unscented versions. (The "un" will still have a tiny bit of scent in the first puffs, though, since both versions are produced on the same equipment.)
sjfine: My personal take is that tins are always better than bulk. Sometimes the blends are identical, but that's not always the case. And even when they are exactly the same, I think the tinning process really helps pull a blend together better. And, of course, tins are easy to cellar for long-term storage. BUT, I notice from your Profile page that all of your favorite blends are aromatics. Aromatics typically exhibit very little change with age; if you never have the chance to smoke a 5-year-old aromatic, you're really not missing out on any of the flavor that you would get from a fresh tin of the same blend. It's also possible -- and I'm not primarily an aromatic smoker, so YMMV -- that you'd notice very little difference between a bulk aromatic and a tinned version of the same blend. But more experienced aro smokers here would know better than I.
Bob