4 panel CD sleeves are the best option for you to consider if your product (software) consists of large amount of data and cannot be saved on less than 2 CDs and requires 2 CDs. There are a lot of option available to you if you want to make it look amazing and beautiful such as you can use different colors for each panel so that it will work for identification purpose for different CDs and make the panels more attractive. Similarly different graphics can also be considered keeping in mind the market that you want t cater for example if you are selling cartoons then you have every reason to print cartoon character photos and other relevant stuff so that children can get attracted and they would buy the CD, similarly games studios can print the mesmerizing scenes from their games and inspire the customers and urge them to buy the CD. So by using efficient marketing techniques, you can easily get the attraction of your potential customers so that they can come to you and by having a look at the stuff make the immediate purchase decision and also tell the others about the stuff so that more sale leads can be generated.