I can't speak as to differences between bulk vs tin for the same tobacco.
That being said, even when I order tins, I throw 1 oz of 3-4 different bulks on to my order since they're so inexpensive (usually 4 bulk blends for the price of one tin). This gives me an affordable way to try a ton of different blends. And if I happen to like a particular bulk blend, I order anywhere from 4-8 oz when I next order to build up my cellar.
That being said, even when I order tins, I throw 1 oz of 3-4 different bulks on to my order since they're so inexpensive (usually 4 bulk blends for the price of one tin). This gives me an affordable way to try a ton of different blends. And if I happen to like a particular bulk blend, I order anywhere from 4-8 oz when I next order to build up my cellar.