Mac users interested in Cubase 5 osx 10.5.8 generally download:
Cubase AI 5 is a lean Cubase version tailored to users looking to record their music without additional bells and whistles. Based on the same core technologies as the Steinberg Cubase 5 advanced music production system, the Cubase AI 5 offers great tools for composition, recording, editing and mixing.
Cubase Sx takes music production to a new level by adding more than 70 new features including powerful Audio Warp Realtime Timestretching, an intuitive Play Order Track, convenient Inplace Editing and many new editing functions.For the first time, a native music production system combines full-featured audio and MIDI recording and editing, virtual instruments and powerful audio mixing
