I've no thoughts on the alternate lines which I've never used for anchoring but my deep prejudice is that you should not use the lightest anchor gear you can get away with but rather the heaviest you can lift.
If you're in an area where the ultra lights like the Fortress won't do, consider some sort of roller and electric or manual windlass. The units designed for the charter fishing industry spool the line and have a good haul rate. Check the ads in the National Fisherman for examples.
G'luck
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