Well, let me tell you, if you want realism, then RFP is the package for you. However, the CLS package has a load of great, updated liveries and the panel is adequate, if just good looking. If you enjoy flipping switches and going through procedures, then the CLS package isn't for you. The overhead panel looks great, but only about 15-20% of the swtiches function, the rest are static. Download the manual from www.commerciallevel.com, then you should have enough info to make that decision for yourself.