I tried using a phone for VR....no good, overheats and gives me a spike through the head pain in 5 minutes. Limited budget. Is there anything I can buy, last generation, cheap, used, you get the idea that will be an improvement over a phone set up? Any idea what kind of money I need to spend to get something functional. I would consider a unit that needed to run from a PC but I am still using a 4790K and a 980.