The problem with TS is that most of them got canceled or postpone, and there is a lot of risk about the house.
If you have a particular house in mind, would you spend time and money for research (title history, tax lien …etc) just to see that it got canceled (or just to be outbid)?
Obviously, you would be pretty limited to your selection and spend your research money on only a few properties, or, you would have to take some bigger risk and buying the unknown.
Like JtR said, you might as well stick with REO for clear title and inspection.