Variety is normally a point to have when buying something. Selecting computer speakers this is also the case. Logitech speakers come in lots of sizes, power levels and costs. Not everyone is on exactly income level, so you'll find types of speakers for other purposes as well as people. Also, with the price range it allows almost a person to buy some of these great presenters. There are low grade, mid grade and premium speakers. This is a term I use to compare the different speakers.