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Astronomics, which, I believe, is the largest astro-gear retailer in the U.S, has their proprietary "Astro-Tech" line of products for us, and I recently learned of the PF flat-field eyepieces, they offer.
Bought and tried one in 5.5mm length, which sports a 60° AFOV, 16mm eye-relief, and the flat field, all for just $55! The orthoscopics and original Ultimas I have in this length seem unusable, now.
If you have high-end oculars you don't need this, but it truly is an exceptional value. Other F/Ls available, some with 65° fields.
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