I found this information regarding oculars that might prove useful:

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http://www.cfarr.com/plosser125ey.html
In a recent Sky & Telescope Review, Celestron's Plossl eyepieces were rated as top ranking, and found to out perform many similar but more expensive eyepieces.

Celestron offers these premium eyepieces at affordable prices, yet they are among the best designed and corrected eyepieces available. They are multicoated for enhanced contrast and all of the 1.25" models are threaded to accept Celestron colored eyepiece filters.

For 2000, the Plossl series is improved, with rubber grips for easier handling, and soft rubber eyecups for blocking outside light and more comfortable viewing.

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http://www.cfarr.com/ulser125ey.html
These ar Celestron's top of the line eyepieces, utilizing a hybrid design of five elements. They feature long eye relief and a wide field, and each air-to-glass surface is fully multicoated to enhance contrast levels. These special eyepieces are computer designed to keep visual aberrations to an absolute minimum. They virtually eliminate the following aberrations: spherical, color, field curvature, coma, astigmatism, distortion and spherical distortion of the exit pupil. The inside surfaces and edges of all lenses are blackened, to keep out reflected light. Threaded barrels accept Celestron thread-in filters. Lens and barrel caps are included for safe storage.

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Other such info from C. Farr Optics regarding eypieces:
http://www.cfarr.com/celeybarlen.html