As a fan myself, i recommend getting a fleshlight and the yearly subscription to Sex Like Real (SLR) which is kind of like netflix bringing together content from some of the best sites plus some more amateurish stuff, it's pretty convenient amounting to like 150usd a year, and the streaming is really good in DEO VR which solves the problem of HDD space since most files go between 10-20GB per movie.
Some other sites i find good quality wise are WankzVR and CZECHVR (which libraries are already in part included in SLR), but they don't have elegant streaming solutions, most sites use streaming directly from the web page which is garbage in most cases.
The first VR videos years ago used to be horrible, now it seems to be really streamlined, there are even live VR cam girls and VR "webcams"