centralised admin

what products are top for centralised admin, (uses 'AGENTS to control AV programs) I am currently using mcafee/NAI's protection pilot and EPolicy orchestrator, but I find them extremely bulky and a nuicance when it comes to uninstalling them, my major gripe is processor overhead, EPOagent consimes all of the processor while communicating with the server and with most of our older pc's they completely lock up until they have finished, Im not asking for a sollution, just some feedback on what other products are available to me when it comes to renewing my mcafee license? and with the products posted what are their good points and bad points.

thanks in advance.

Matty G aka bob