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There was a write up on budget widefield eyepieces in Sky&Space Nov/Dec 2004 ( if you still have a copy). They tested and compared many brands and prices.
Here's what they said about the Andrews UW 80 degree 11mm
Like a compact version of its larger sibling, this eyepiece also looked a bit like military issue, with a matt black finish and no frills lettering etched into the black. I immediately had problems looking through this eyepiece, and couldn't see more than about half the field of view at any one time. Even with my eye hard up to the stiff rubber eyecup, I still felt as if something was getting in the way of seeing the whole view.
What could be seen looked good, with a sharp image and good light transmission and colour visible in the centre of the image, but I finally gave up, thinking there may have been a problem with this eyepiece, or with my viewing technique. Very frustrating! However, as mentioned above, eyepiece selection is a very personal choice so you may have a completely different reaction. Again, I couldn't compare my reactions to the Internet reviews, because the eyepieces appear to have been only recenly released.
Try to get hold of this copy of Sky and Space, the article is really very good.
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