Noel,
We in Ma foi have a better competency based recruitment and development tool called the 16 PF Concise - Job Model rerport, a scientific tool thats used for hiring by Fortune 500 Organisations.
This is far superior when it comes to DISC or any other tool, as it has 50 yrs of research and you can reach me for more details.
I sit in the Blore office!
Rgds
Arvind