For this reason it is generally good to compare the scattering characteristics of a new eyepiece with that of an eyepiece that is already known. This way you get the best of both worlds. However, the fastest growing segment of planetary observers are using optimized Newtonians for their planetary viewing. For this reason, eyepieces free from reflections are especially critical. There are no great differences on-axis.
Some observers find eyepieces with short eye relief difficult to use.
This includes orthoscopics, Plossls, and some of the modern wide-field eyepieces such as Naglers and Panoptics. Other observers aren't as bothered by the lack of eye relief. Eyeglass wearers, especially those with astigmatism who cannot simply remove their glasses to look through the eyepiece, may do best with eyepieces specifically designed for long eye relief, such as the Vixen Lanthanums, or with longer focal length eyepieces combined with a barlow. This is a subject of much confusion. Some people like them, some think the extra elements reduce contrast unacceptably.