In reply to markk5.

Both W3TC and WP Supercache can be configured to use APC, so I was comparing to that scenario. Since they more aggressively cache the pages, I think their out of the box setups running APC would be faster than Batcache (I haven't checked though, that's just a wild guess on my part). You could of course configure Batcache to cache everything for the next week, in which case it would be just as fast I guess.

I didn't even know you could serve pages from WP Supercache or W3TC from a memory disk. That is a really neat trick. I think I'll stick with Nginx page caching for that myself though, since it's presumably even faster.