Pacman,
I've not stayed at the Aston Shores at Waikoloa, but I remember it because in 2009, when we stayed in Waikoloa, it was before I bought HGVC and I drove through the property thinking of it as a GetAway option. It looked liked a very nice property -- it looked identical to Bay Club which I also drove past.
Perhaps even developed by the same group, but I don't know that. I would not hesitate to stay there for a GetAway if I needed to plan in advance. It had very good reviews on TripAdvisor.
Please let us know what you do, and good luck!
Best,
Greg