Encrypted tunnel from load balancer to upstream servers. SSH vs. SSL?

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http://serverfault.com – We're building a load balanced setup with two load balancers (that also terminate SSL) and several upstream servers. Both the load balancers and the upstream servers run nginx. The network on which requests are forwarded to the upstream servers cannot be trusted, hence we have to re-encrypt it after SSL termination on the load balancer. We're wondering which route we should take for re-encrypting the connection: SSL: the load balancer connects to an upstream server using SSL. positive: fairly resilient, since every connection is established from the ground up negative: added latency from th (HowTos)