I think my music collection/library is about 400GB at the moment, so pretty big. I tend to suddenly decide to listen to something so there is no.guarantee it will be on my device. Especially if it is something older like an early led zep or iron maiden album, or maybe even some who or Elvis. So for me it is great.

I also often suddenly want to listen to a specific song or artist, but can't remember who it was by or who sang it. With subsonic it has a really good search feature that is.very.fast, so really useful.