Three, read the words used by Tarzan (not my words, but his) in the third paragraph of post thirty-two in this thread:

Sounds impressive but T Basic does not outperform Hi-Opt2, ASC, full indices. It's only with side counts, sub-groupings, and factoring in key card effect, an expert level of the system, that you are going to get that extra sliver of advantage to outperform it. The system allows for versatility, such as altering side counts for specific playing conditions, and uses the information derived to maximum usefulness. There is a ceiling, and we are truly talking about small differences between the performance of all advanced counts, but the system has been quite effective for me. Flash is a friend that has seen me play, knows a lot about what I do, etc., a biased opinion.