I'm with you. The "Nuri" label is ok but there is better. Most are produced in Morocco but there are Portuguese sardines of better quality and higher price,and some from Tunisia.The bristling sardines from Norway are excellent. I like them skinless and boneless in olive oil, these have better flavor than the whole ones. Most packed in Canada are not sardines at all but small herring. You might check out sprats, a similar small fish from the Baltic sea. They are canned or bottled and are excellent.
.European sardine Sardina pilchardus
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European sprat, Sprattus sprattus