I've gone back to W3 Total Cache.
I get an 'F' from Yslow on compress components with Gzip. I've tried both 'Gzip and deflate' and just 'gzip' in the page cache settings with the same result.
What can I do to get gzip to work for page caching with W3 total cache? I've seen old unresolved threads of this elsewhere...
Also, I get the following error for caching:
"The following resources are missing a cache validator. Resources that do not specify a cache validator cannot be refreshed efficiently. Specify a Last-Modified or ETag header to enable cache validation for the following resources...."
Is there a way to resolve the lack of ETag headers for the long list of files?