Resale values have not improved and probably will not improve.
Marriott exercises right of first refusal on their contracts. Sunterra did not build that into their sales contracts. In order for someone to actually buy a resale week at Marriott, they must pay more than the developer is willing to pay to buy it back. Therefore the bids and offers for Marriott weeks are higher.
I've owned with DRI for 10 years. DRI is not, has not and is not attempting to achieve Marriott standards at all of it's resorts.
Presently DRI offers a buy back program for some of their resorts. I've contacted them and decided that enough is enough and have agreed to sell my units back to the developer. It's not the MF's alone. It's that they've achieved or exceeded Marriott and Hilton without their resorts being of either Marriott or Hilton quality. Their track record over the past 10 years indicates to me that this is not likely to happen in the future. Improvements have been made to soft goods and to furnishings and kitchen appliance (as least in the deluxe units) but, the developer has a track record of not improving the overall resort (amenities) for me to ignore and mismanaging MF's so as to have to charge owners SA's to bring a resort back up to standards.
Basically, if I'm going to pay Marriott like MF's, I'm going to own Marriott quality and have Marriott resale values. I'm not convinced that DRI will provide this in the future.