Look at where the church is growing the most in the world today - Africa, South America and Asia. Most of the pastors leading those congregations are lucky to have a Bible and concordance let alone a set of commentaries or digital library system. But they have the Holy Spirit - who Jesus promised would "guide us into all truth".
I'm not planning on tossing my Logos, but I do want to bring a little more balance to my comments from yesterday. When it comes to Bible study tools, it's not an either/or issue, it should be a both/and proposition. One should desire to have the best tools available to study the Bible yet not neglect the importance of the relationship with the Holy Spirit. The Bible is the only book that you can read while simultaneously speaking with author. Kind of cool, huh?