Ok I'm a newbie, and I'm on a tightish budget, take these into account with the rest of my comments here.
I bought the 30mm recently, based on the review here in the forums too.
Yes, it has seagulls, in my particular case I'm seeing them in about the outer 25-30% of the field, this is in my 10" f5 Dob. This was a larger area of aberration than I expected from the review, yet I am very satisfied with this eyepiece, I think it has instantly become my present favourite. It's an eyepiece for searching, and for displaying clusters in perspective to the "emptier" space around them, etc, it has a great big field of view and yes it's great at the price..
I have looked through a similar speced but much more expensive eyepiece (ie 30mm 2" barrel 80 degree fov, can't quote brand sorry) courtesy of Bill (ArgoNavis) and his ep showed no seagulls at all in my f5 scope, and
may have displayed more contrast (as I tried his under clear dark skies, and mine so far only at home I'll know more after this weekend when I use mine under the same sort of conditions - fingers crossed). He also said his cost around $350 if I remember correctly. My budget presently doesn't allow $350 eyepieces, but sub-$150 yes definitely.
Re price: the review says they are $149, the website shows $149, but when I got mine recently they were on special or something - at $99 an even better bargain!
(read your May magazines).
Steve