Comment Apache w/ F5's (Score 1) 298
The "BEST" way to do this would be an application that is coded for session sickyness(that it if your site is databsae run where users login or if you have something like a shopping cart), you would build it out with a back end DB Active-Passive Cluster, then 2 or more active nodes in your HTTP server cluster with an Big IP F5 in front. Now this is quite $$$ but you asked what the best way is so there you have it.