I have had several Pioneer wings as have three of my buddies and none of us have had any trouble with leaks.
My current Pioneer wing (27#) does not use an STA and I have zero problem locking down a PST steel 104 so that it is rock solid stable.
I have seen the Eclipse (a buddy has one) and while I am sure it is a nice wing I see no benefit to having the extra pooochiness of a inner bag in such a small wing. The thing I like about the 27# Pioneer is the way it presents so little drag.
My current Pioneer wing (27#) does not use an STA and I have zero problem locking down a PST steel 104 so that it is rock solid stable.
I have seen the Eclipse (a buddy has one) and while I am sure it is a nice wing I see no benefit to having the extra pooochiness of a inner bag in such a small wing. The thing I like about the 27# Pioneer is the way it presents so little drag.