I bought a PA238Q a while back, and I use it now as my second monitor. It has incredibly bad persistence... like 20 to 30 seconds of afterimage when I move a window full of text out of the way. Plus the backlight bleed on a black screen is pretty bad.
Yeah, you wouldn't think so though, given the one-digit difference in name and the way they place it right next to the PA248Q in their marketing materials. That's marketing departments for you, I guess.
Thanks for the tip on Trace Free. It does something for sure.