I have complete sets of Baader orthos and really like them. They provide highly detailed images with good light through put and do so at a reasonable price. eye relief is good until you get down to the 6mm and 5mm where it can be tight. Maybe too tight if you wear glasses when observing. Many folks point out that the UO volcano-top orthos are easier to use in short focal lengths given their shape. That has been my experience too but the Baaders are no problem and I prefer their coatings.