Hi Joe
Gotta weigh into this one. Under 10mm my favourites are the Pentax XW's..got 4 of them, miles and miles ahead of the ES 82º's. Also have the 9 14 and 20mm 100º's, just beautiful in my f8 refractor. So if your spending some one else's cash
and have to do the ES thing just get the 3 100's and sometime soon ES will come out with a 5.5mm 100º. Easy....
Best filter is a car and a dark site to go there.
Matt