GLC was all Mac for the first several years, pushing the MacOS all day, every day, in every way for music, audio, video, storage, backups, following every improvement and taking advantage of every new feature in bus architecture, formating, digital cascade, move to unix etc. We had an inside contact in Cupertino we could call for the obscure error codes, and were early adopters and believers from the beginning.  Sneakernet was the only way to move huge sound and video files around between computers!