The ease of use that BCA has created with this probe is top notch. After struggling with an older, more inefficient probe for a few days this year, I made the switch to the BCA Stealth 300 Probe. I am stoked on the deployment mech. on this bad boy, super easy and secure. The 300 was a little long to fit into my pack, so I switched tot he 270 (blue) length. If the 300cm fits in your pack, use it, if not check out the 270cm.