Panels are only part of the equation - and yes by all means a substantial part. But it also the drivers do vary ion what they allow the monitor to do.
In my view more important is to check the dead pixel policy of whatever brand you are considering.

When I bought my last monitor with 'photo editing' in mind I bought an Eizo (low-nmid range at the time). The Eizos did (and probably still do) command a premium price BUT there are many great monitors out there now from other brands which are certainly just as good - at least in the 'affordable' realm. Extreme top end I wouldn't know.