Depends. The QVO is probably cheaper (25 bucks) but the EVO has significantly better read/write perf and longevity.
The evo is just $35 more, so I might just go for the 870 evo as its like $135! This should be much faster than my 1tb hard drive. Hard Drive: 120 mb/s Sata 870 evo: 560/530 mb/s