Works when it's needed
On the east coast a 265cm seems sufficient for our wicked deep snowpack.
The probe is light enough and easy enough to access, even if you leave it in the bag for the tour. It'll deploy quickly and effortlessly for a timely search.
Also works well for looking for hidden crevasses and other unseen threats.
Could go with a higher end carbon or a longer probe, but the justification isn't always there. The weight is fine on this. The length works for up to the deepest burials.