Used them twice without any problems. They're owned by the PCC people (Ochoa brothers) you're buying your timeshare from, if you're buying on eBay. I think they handle closing on all their in-house sales.
All my paperwork was correct on the first try, but it still took awhile for things to close - like four to five months - but it may have been because the timeshares were in Hawaii. Be patient, and make sure you save all your documents: After the most recent closing, Wyndham tried to ding me for maintenance fees I'd paid up front to Title Outlet. I had to contact Title Outlet to get them to prove to Wyndham those fees had been paid. Took several extra days, but eventually things got straightened out. I don't know if that issue was a problem with Title Outlet, but am more likely to suspect Wyndham dropped the ball.
I'd use them again, if the sale warranted it.
Hope this helps,
Dave