Nine years ago I mixed my first piece in Sonar (5.x) using the new Garritan JABB library. Mixing music in a DAW using samples was a new area for me and I had (and still do) much to learn. On Deviant art (http://www.deviantart.com/) artist will often post an older piece that they did years earlier with a new rendition they have recently done of the same piece to show how they have improved and changed their interpretation of the subject.
So here I have done basically the same thing. I opened my old Sonar project for my piece “What Ever” into the newest version of Sonar and started redoing the piece. I had to pull out the old version of JABB that used the Kontakt player and replaced it with the newest JABB that uses the Aria player. I redid the routing of the instruments so that each now has its own bus. I pulled out the old reverb I was using for all the tracks and instead use separate(and different) reverbs on each instrument. I also changed the panning of the various instruments and I had to replace the Guitar Rig 3 that the bass was using the the current Guitar Rig 5. I ended up adding some EQ, compression and transient mastering that I did not do on my first version.
For your consideration an A B comparison: