Worldpoints is a good program, especially if want to use a flexible program to get cash back. While I do not have any experience with redeeming for flight miles, some of their other rewards compare with TYP.

The biggest difference in my opinion is that Worldpoints do not have a limit to the number of points you can earn and TYP does. It also appears to me the TYP are really being devalued.

Just my opinion. Hope this helps.