Pouch: Sir Walter Raleigh
Tin: goodness...... Not broken down by style of blend? Well, if I had to pick only one: Escudo. But I could name about a dozen runners up
Bulk: Stokkebye's Luxury Navy Flake, again, with about a dozen runners up.
Well in the UK you can get G&H and SG in pouches. So I guess this would be an american survey.
Best bulk in my opinion would be El Ricon de la Pipa #1, it's only available in bulk form too.
P.S flakes would be subjective as they actually come in boxes.