Backlight bleed like you describe is awful imo. A lot of 22" panels have had that problem, so swapping it out may not improve things much.

The nature of the display technology is such that the use of LEDs (light-emitting diodes) in it will result in the backlight bleeding phenomenon sooner or later. It can range from minimal to extreme ...

I don't think back-light bleed has much to do with what panel type is being used. If I were going to purchase a 22" wide-screen, I would go for the Iiyama E2201W-B1, which has had excellent reviews.