Is there a wy to see the "biggest" volume in scene or selection?

[tyFlow]

There are settings in the Display Data operator ("limits" groupbox) to reduce the total number of particles whose information will be displayed at a time. There is also a setting to show only values within a value range. You can increase the minimum value of that range until you've isolated the size of particles you want to see. There's not currently a way to sort values or show only the largest values or whatever, but using the range limit I'm sure you could quite easily reduce clutter and isolate the values you want.