I assume that the Fomatone is on the right as we look. Much prefer the version on the right. Looks much richer with a colour that looks more "natural" to me although in logical terms I cannot explain this as of course neither is truly natural .
Looking at your details it seems that Kentmere has taken longer so I have not been able to understand why you say the advantage of Omega with Kentmere is a saving of time.
Kentmere has taken longer and doesn't look as good.