The only pre-filled carts I have are Cowboy, and I don't much like them yet, so I really don't know what the originals taste like!
Coming from SYO I am used to ordering in bulk, a pound of tobbaco and two boxes of tubes every other week so I don't run out.
So far this isn't much cheaper than SYO because of the front end cost, which I knew that going in. But with the new release of the empty carto's, I am doing things backwards of most members on this forum. I bought a bunch of empties, with plans to buy several more, and am trying juices to find what I like, then will bulk order that juice.