Need help choosing between two builds

[taylormaxwell82]

So i plan on buying a pc at the end of this month i have the option of buying a preowned for 750$ which has been owned for a year. Instead i could just build my own which ended up totaling out to be 650$. Please help me choose this will be my first gaming pc I want the full gaming experience

link to preowned build
http://imgur.com/CDDDmu0

link to the build i built
http://imgur.com/tNaAjYu

 

[M04D18]

Preowned is far more better for gaming imo