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The ES 68deg 28mm is very good. (I also have the 40mm that I quite like, but it's a bit long for your scope).
I concur with the above comments on the ES 82deg 14mm and 18mm, though, apart from the tighter eye relief, the ES 18mm is quite good overall - better than the Baader Hyperion 17mm, for instance, to which I compared it closely.
I also have the ES 82deg 11, 8.8 and 6.7mm and find them all quite good, though there's a bit of flaring on bright objects with the 8.8mm (that I don't notice with others).
I did extensive side-by-side comparisons with a Baader 8-24mm Mk III clickstop zoom - I found it slighter better than the ES 82deg 14mm at that F/L (although it was a close-run thing). In general, it wasn't quite as good as the other fixed length ES eyepieces at the same F/L, but it came pretty close, and considering the costs involved, that means it holds its own, IMHO.
I've also had the GSO Superviews and, whereas they're not bad for the money, they are no match for the other eyepieces I've mentioned.
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