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Hi Pat,
I did see this post elsewhere but didn’t respond because you were comparing the l-enhance and zwo which I have no experience with. On the off chance if you are asking because of general interest in duo filters I’ll chime in with my experience with the STC Duo which I can say is an excellent filter. If the interest is in light pollution suppression then I can say they are worth every cent that you pay for them.
Cheers
Ryan
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