The large chuck end is on the left, the small loin end is on the right.

The large chuck end usually has more fat, and the eye is not as tender (more like a chuck steak), but a larger cap and some smaller muscles that are as tender as the cap.
The small loin end has less fat, and a thinner cap, but the eye is more tender (more like a strip steak).
I kind of prefer the large end. I don’t mind the extra fat as a trade for the sometimes huge cap. Not that there’s anything wrong with the loin end!
The large chuck end usually has more fat, and the eye is not as tender (more like a chuck steak), but a larger cap and some smaller muscles that are as tender as the cap.
The small loin end has less fat, and a thinner cap, but the eye is more tender (more like a strip steak).
I kind of prefer the large end. I don’t mind the extra fat as a trade for the sometimes huge cap. Not that there’s anything wrong with the loin end!
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