I ended up with the Asus ProArt PA248Q for $395. First impressions are great. In sRGB mode (factory calibrated) the only change I made when calibrating to the Spyder4Pro was brightness, otherwise the monitor was just about perfect out of the box.

Controls are buttons, not sensor touch and are easy to use. On board 4 port USB 3 hub, the monitor can rotate to the vertical, there's a button that superimposes a grid on the screen in cms, inches, A4, and standard photo sizes.

I would have liked something bigger but they are well outside my budget.