For nVidia only, what's the next cheaper alternative if I cannot afford G-Sync? Should I go for 144Hz? 1ms response? Both? AMD is not an option for me, due to mining driven prices and lack of PhysX. I am looking at 1080p only, since I cannot justify the cost of 1440p/4k ready cards. I am NOT a competitive, hard core gamer, yet, I want to get something that would remain relevant for a few years. Thanks!