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Wouldn't bother with those coloured filters IMO. Remember waiting patiently for a celstron 7 pack or so to arrive from the states a few years back, what a disappointment. No improvement whatsoever, and a deteriorated image was noticeable.
Baader make some that may be a different story however can't testify.
UHC or O111 filters are well worth it for nebula viewing.
A good Ortho will be your best bet for improved planetary views, although with narrower field of view.
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