Actually, now that I'm using both the 22xw and the 25er side by side, there really is no comparison. I need a low haze or glossy unit. I just don't enjoy the washed out matte surface even for office work. The 25er is far superior.
Is there a new low haze HP due out this fall? The 25f has been out quite a while.
EDIT: Part of the problem is that I had one of my screens set to limited instead of full.
xrandr --output HDMI-1 --set "Broadcast RGB" "Full"
I don't yet know the eye strain ramifications, but in terms of visual quality, it made a big difference. Still the glossy is clearly superior, but the other one no longer looks so washed out. However, I should add that for whatever reason, activating the full RGB on the matte just now also "activated" my temple tension on the left side. It could be a little harsher somehow on the eyes/brain.
In any case, I just prefer the low haze unit, and I want to get another low haze or glossy unit for my next monitor. It just looks and feels better, like I'm seeing things clearly and directly instead of through haze, like having a proper pair of glasses instead of never seeing quite right.