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I bought a 18 mm 82d explore scientific from another IIS member.
It is much better than the 72d 25mm WO SWAN that I have been using. The stars are rounder for close to 90% of the view and much less pronounced coma towards the edge - not seagulls like the WO.
It seems to have better contrast and gives more details of GCs and Nebs. I will consider the ES 30mm next. I wanted a wide AFOV more than the wide actual field. The higher magnification combined with the wider field gives great views of the larger globular clusters especially 5139, 6752, 6397, m22, m55 etc.
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