Search for Wenco 510899. That's the best one I've used. It takes the lid off by cutting the side of the tin rather than the top and doesn't leave a jagged edge.
I've been won over by the start of this extremely polite review:
Dear friends, Hi.
@ltc started
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Search for Wenco 510899. That's the best one I've used. It takes the lid off by cutting the side of the tin rather than the top and doesn't leave a jagged edge.