Use DIM to install content but do not download 4.9 files unless you are OK with DRM encryption.Once you download and install studio 4.9 your 4.8 is bye bye. If this is OK with you then go for it. For new users daz connect is great, you don't have to know how to do zip installs or upgrades it is all handled inside studio. The downside is that you have to deal with Online connection for DRM verification and encryption.