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John, the DGM Optics (Omega) NPB is the all round pick IMO, and it isn't that expensive. I also have at present a Baader UHC-S, and this works OK on smaller scopes, as it allows more light throughput, but the NPB is superior at bringing out nebulosity. Some kind people on these forums recommended to me, and they were right!
Clear skies
Nick
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