When reviewing one program, the SAT.TXT writer asked if tougher questions made the program better. The tests are organized according to difficulty. That is how they are scored and nationally normed. However, much more important than the difficulty itself is whether the questions are LIKE the S.A.T. questions. I can understand where he is coming from.
Drill IS boring.
Keep in mind also that using a pencil and paper in a pressurized test situation is different from using a computer at home. This is another reason why some people do not feel drill-based programs help much. Ain't nothing like the real thing, baby. I hope this provides an update for the SAT.TXT file and a perspective on the programs.