Display Enlightment by NCX

if the switch from 1080 to 4k is worth the price jump and the trade off of glossy to matte?

 

I can't answer this for you, especially since there are so few glossy options now.  The HP 24 Envy comes the closest to matching good 4K monitors SDR (HDTV/REC 709 & sRGB) color space and vibrancy wise, but needs to be calibrated to compete with the best affordable 4K monitors, the Philips 276E8VJSB and LG 27UL550 which is not as accurate, but supports Free-Sync and has a perceived black depth increasing matte grey bezel.  The Dell S2419H uses the same panel as the 24 Envy, as well as is a bit more accurate, but has the same issue with blues and oranges:

These panels suffer from <1mm thick vertical black lines which span from top to bottom of the panel when viewing some light colors such as light blue and orange.

The Xbox One X can down-sample 4K to 1080p monitors, but not with 4K Netflix content (15.26mb/s), which is significantly higher quality than most of the 1080p content (2-6mb/s streaming rate).  The Xbox One X also supports 1440p, so if in the US and able to deal with 20-27ms delay consider the Planar PXL2790 with Plasma Deposition Coating.  Clarity and Vibrancy: The Last Of The Plasma Deposition Coated 2560x1440 IPS.

There are zero TV's under 800$ US I'm willing to recommend due to low frequency LED PWM Dimming use and/or poor preset color accuracy.