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A Paracorr will allow many eyepieces (cheap & expensive) to perform better in Newtonians - it slows the light cone a little and reduces field curvature in addition to correcting coma.
Titan II ED eyepieces sold by Astronomics reputedly perform very well in Newts with a Paracorr - they're US$160 new but can be had on Astromart for around US$110 + shipping. AFAIK these are the same design as the TMB Paragons. I have the 35mm & 40mm - they're nice eyepieces though the outer field is poor in my C11 due to the aberrations inherent to the SCT.
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