UDP/TCP load balancer recommendations

My organization is about to embark on a project to fortify our log 
capture and analysis infrastructure.  One item that I've identified as 
being necessary is a load balancer to spread the incoming message stream 
(primarily syslog/udp) across our back-end syslog-ng receivers.  In the 
past we have utilized Ultramonkey <http://www.ultramonkey.org/> to 
perform these sorts of tasks, but I'm interested in exploring other 
options both for performance and cost reasons.

What load balancers have you had a lot of luck with for this sort of 
task, and are there any out there that "specialize" in handling syslog 
messages?

I'd appreciate this list's input.

Thanks,
Steve

-- 
Steve Bernacki, Jr
To date, the Pan-Massachusetts Challenge has raised 204 million
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