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If buying filters again I would definately go for the Astronomiks.
The Lumicon and others of similar construction have a life of less than 10 years before moisture damages the diffraction grating.
The astronomiks is rated a cut above all others optically by those that have written about it, and comes with a 5 year unconditional warranty.
You want to avoid the Sirius optics brand. Whilst good optically, the thin film which does the filtering is unprotected on one side and easily damaged.
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