TechyInAZ :
Can't really recommend a card until you say what resolution your playing at. Also, the entire system specs would be good.
If your playing at 1080P, a 1080 will last you for a long while. If your playing at 1440P or higher, the 1080 Ti for sure.
Long story short i am getting a computer off of a custom building website. It is a gift and the people paying for it want it off there. Only way i can get it. I would havei7-7700k, 16gb ddr4, and other. I would be gaming at 1440p or 4k. I already have mouse, keyboard, and headset. I have enough money to buy one of the monitors now and buy the other at a later time.