I went from my phone (Google Cardboard) to the Sony PSVR. I don't have a PS4! I use the PSVR on my gaming PC (GTX970 graphics card) with TrinusPSVR, that is software that emulates the Vive so the PSVR works with SteamVR. It's not bad at all, the only drawback is that there's no position tracking (up-down and forward-backwards motion) yet. So in that respect it is like the Google Cardboard, but with better comfort and resolution.
So if you don't want to spend like $800 it's a good alternative.