CiscoSecure NT vs CS UNIX

["Martin, Christian" <CMartin () mercury balink com>]

All Ye NANOG readers,

Does anyone use CiscoSecure ACS for NT to control router access?  If so,
has anyone used the UNIX one and done a comparison?  I need to evaluate
these tools as a replacement for the TACACS+ daemon available from
Cisco.  Any info would be appreciated, particularly scalability and
stability.

Regards,
Christian