I use Superior 2 but I have purchased a few of the EZX librarys to fill out my needs a little. I have SDX librarys but I found that some of the EZX librarys have great room sounds. Out of the EZXs I find myself using ROCK!, Nashville, Jazz, and Vintage, along with Latin Percussion mainly.
Latin Percussion is a must if you do those sort of tracks. Nashville is very UNDER rated!!!! I've used it on countless Blues, Rock, Country, Jazz brush kit, Pop, etc....... It fills just about any void you would have.