We bought our resale from a reseller and saved about 80% vs buying from worldmark. We mostly use it for a night here or there.
We love the One in Solvang,Ca,we stayed at the one near
Disneyland and it was nice. Just to far to walk. For my partner and I worldmark is great to have for the two above mentioned resorts, we have stayed at Angel's Camp and a few other I have found them to be clean and they all have their own charm to each location.
A few times we have been on long road trips and used our Worldmark in between staying at regular hotels is, with a full kitchen and laundry in the room. I will do our laundry and make cookies or brownies and other snacks for on the road. It is a big money saver.
We love our Disney Vacation club more, but we are at Disney with DVC so who would not love it.
I would have to say if I was going to compare the two DVC is worth buying from Disney.
Worldmark I would only buy on the resale market. It is just not worth what they charge for it.