Hi,
I have a set of these and like them a lot. I think they are a good balance between price, quality and FOV. I have the extension rings too. I don't use them every night but they are good when needed. I have a 200mm SCT, but some other scopes aren't suited so well.
Alex has a few comments on these EPs well worth reading. He is more discerning than me (or picky, eh, eh?)
http://www.iceinspace.com.au/forum/s...archid=4197085
Cheers