I have 12 resale timeshares, and have used Preferred timeshare resales, Paradise Timeshare, and RedWeek. All have been great, and the two brokers helped me get the best deal. RedWeek full service sales are also great, you just have to do a little more work and they don’t look at other weeks for you to help you get a better price, they just sell you the week you contacted them about. I never get title insurance, just look at the county recorder to find the deed, and your title company looks it up too, I’ve never had a problem. It’s a lot of money to pay to mitigate a small amount of risk. Once you talk to the brokers you will either feel comfortable with them or not.
Feel free to pm me if you have any questions.