Futures Truth.... Trading System

[Almarok]

Hi,

have any of you tried these Trading Systems that have been tested for several years by the site: Futures Truth?
In your opinion, are they still valid....or...?

- Aberration (Keith Fitschen)

- Benchmark (Schen T.)

- Golden SX (Stuckey R.)

- DCS-II (Peter Aan)

- Mystery System (Peter Aan)

- Dollar Trader for Currencies (Dave Fox)