The thing about online marketing is that almost no element of it is linear. Almost every aspect of it could bear the iconic American “object appearing here are closer than they seem” sign. Or its direct opposite.
Hence any decision, say your choice of a CMS, may limit your choices radically. And regardless what you do, you need to walk down a narrow path before you arrive at an opening where you can make or remake the decision again.
Moral of the story: none.
But if you can move away from relying on single best performers or single point of failure, you are one step closer to a buena vista.