I just upgraded to version 4 and actually to the Scholars Library. I had version 3 original language. I wanted more study resources and commentary that I saw in the Leaders Library but that was a step down so I upgraded to scholars for a good price.
I absolutely love it. The opening page is like a portal with various topic suggestions to study. Not only do I still have my exegetical study guides and lexicons but I have several commentaries and topic study guides too.
Also if you have an Iphone? There's an app for that too. They have a bible study program for the iphone and if you have the Logos library like I do I think you can use all the resources on the iphone...which would take a lot of memory. I have it installed on both my laptop and my desktop. If I get something like an ipod Im gonna do that. Id love to have this program more moble. I want to get a netbook to take around instead of this bulky Laptop
Check this link for a demo
http://www.logos.com/demo