I mentioned the flare issue in this thread last year:
http://www.iceinspace.com.au/forum/s...d.php?t=123827
It's been well documented on CN. I think it was often described as "glare" rather than flare. ES even sent me some felt circles to attach to the bottom of the eyepiece. Unfortunately this didn't help.
Maybe saying they are "unusable" on the moon is a bit harsh, but I found it bad enough that I wouldn't use them for that purpose. Fine for planets though.
I was using my SV80ED.