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Good day to all. I primarily observe with a Celestron C80ED, f/7.5, and a 150mm Newt-DOB, f/6. May I ask?..... I have a couple Celestron Omni Plossl eyepieces, 12mm and 9mm (newer China mfg). I also have 2 Meade Series 4000, Plossl, 12.4mm and 9.7mm (newer China mfg). And finally I have 3 older Edmund Scientific Volcano Tops, 12.5mm, 9mm and 7mm (1970s Japanese made). With the eyepieces, I use a TeleVue, 2x Barlow at times, which is an excellent performer. Seeing in my area has been so bad for such a long time, I can't seem to get a handle on which set might have an edge over the others. I've tried on several occasions to compare them side by side, however it is very difficult to do so under such conditions, though I'm hoping with the cooler weather better views may be had. I'm speaking primarily of quality in sharpness and detail for planetary and lunar views. I'm wondering if anyone has had a chance to use any of these brands - or all of them - and if you feel one brand or type would have an advantage, if and when good conditions present themselves. Any opinions would be appreciated. Thank you. joe