the best monitors for photoshop are 8-bit ips panels because of the color accuracy however they are outside of your budget. the next best thing would probably be a 6-bit e-ips panel which keeps the wide viewing angle of its bigger brothers but has color accuracy similar to va and tn.
i suppose by pixel walk you mean when you scroll up or down on that page. such pages greatly exaggerate the effect. i cannot recall ever having issues that bad during normal usage on my vp201b, nor on my sony tv which i use as monitors. just as an fyi even my samoled phone screen shows flicker when scrolling those images.
as far as during normal work such as graphic design, gaming, or web browsing i've never really had issues.