out of those options id go with Acer i dont know much about BenQ maybe they have good products and customer service im not really sure, as for the top 2 dell is alienware and vice versa both of wich is bad service for sure.
Personally if you cna fork out another $50 id go with Amazon.com: ASUS TUF Gaming VG259QM 24.5” Monitor, 1080P Full HD (1920 x 1080), Fast IPS, 280Hz, G-SYNC Compatible, Extreme Low Motion Blur Sync,1ms, DisplayHDR 400, Eye Care, DisplayPort HDMI BLACK : Everything Else
i can count on 1 hand how many issues ive had with Asus products VS other companys (EXCLUDING EVGA)