The GSO Superview is a 68deg AFOV EP, a sort of a clone of the TV Panoptic.
They are quite cheap via Andrews so are not bad value for money. Bintel sell them under their own name, but I don't think they have a 25mm version. See
http://www.bintel.com.au/Eyepieces-a...7/catmenu.aspx
Personally I can heartily recommend the Televue 24mm Panoptic. Not a budget EP but superb value for money and the best value in the TV line. I used one for 2 years in my 12" and it was my go to item for almost all objects. Nice eye relief, wide field, nice and sharp right scross the field. If one ever pops up on the classifieds, jump on it!
Malcolm