It's frustrating for me, that as "fancy" as Logos is, I usually can get a relevant set of hits for part of the Bible I am looking for with the Google search engine, than Logos.
Once I find the general verses I am looking for, then I use Logos to dig deeper into what I was looking for.
You may say, "Well, you just don't know how to use Logos." Yep, I find Logos less "intuitive" than Google. I can put a list of say, three words into a basic Logos search such as: rocks cry out (Thinking of Jesus' triumphant entry into Jerusalem), and get nothing. Do that in Google and I get Luke 19:40 instantly at the top of the returned matches.
My point is again, Logos is less intuitive than it should be for the cost.