?? That's what i'm trying to replace.
Yes I know. There's nothing to upgrade from with G-Sync under 500$, and it's easy to downgrade (Dell S series). You could buy an X-Rite Colormunki (150$) to calibrate and improve the G2460PG (use the
free Color Sustainer to ensure games use ICC profiles), a 24-25 or 27" IPS 60-75hz 1080p IPS panel (no need to spend more than 200$ in the US; the Philips 257E7QDSB is on of the best and sells for under 165$ in the US from Amazon), and
a quality light to use as a bias light (20$) if there are no other light sources in the room.
The problem with dual monitor set ups with IPS and TN is that AHVA/IPS/PLS must be viewed differently (top of the panel should line up with the top of the viewers head or be a bit higher) to not see glow while TN panels must be looked down at to not look awful.
AHVA/IPS/PLS Proper View TN Proper View Best Reviewed Flicker Free 24-25" 1080p IPS/PLS MonitorsBest Reviewed Flicker Free 27" 1080p IPS/PLS MonitorsIf you drop the G-Sync requirement then you could buy a 27" 144hz 1440p AHVA (marketed as IPS) panel with Free-Sync like the Acer XF270HUA (good), Nixeus Edge 27 or Pixio PX277 (untested but likely fine), but the GTX 970 limitations make upgrading pretty much pointless.