I prefer the bulk. First off, I save 10-20 dollars off a pound. Also, try both arrive wet, and need to dry. The tins are sealed and, IMO, you are SOL on drying them until you smoke t. The bulk, to me, already dries a bit during shipment, so I usually keep a pound in the ziplock and box for me to grab from over a month of two. It slowly dries out and is great.
Taste wise, they are identical to me. The only benefit to either one, would be if you are cellaring or smoking.