which wyndhams trade through II?
I know that Governor's Green, Bay Voyage Inn, and Star Island all trade through II. There may be others.
As the previous poster pointed out, there is no guarantee that you can get the highest-quality properties, but it is possible, especially if you are flexible. Inside 45 days, all trade power restrictions are lifted, and I have been able to see units at Westin Princeville, Four Seasons Aviara, Harborside Atlantis, etc. If you can travel within 45 days, you can get some excellent deals. On a regular basis (outside the 45 day window), I see properties like Marriott Aruba and Hyatt Wild Oak.
Will you get summer weeks in three bedroom units at Myrtle Beach? No. However, for a very low investment, you see some great properties. You can also put in a search request, and my last search request for Disney was filled in three days.
My parents have owned Wyndham for eight years, and we have loved travelling with them, and have enjoyed the Wyndham properties. However, we weren't loving some of the resorts we got when we traded through RCI. After doing some research, we decided we wanted more Wyndham points (so we could pool points with my parents if needed), but we really wanted to trade through II. We bought resale on ebay at Governor's Green for less than $1000 with all costs, and it has been a great purchase for us. As always, YMMV.