Good but needs improvement. It is multiple times that one chipolo pings and another one doesn't (when on the same location) which is not to do with Google's Find My Network. This means the device itself is not pinging properly. I would personally like it being more frequent with location pings even if that takes a toll on the battery life until at least the network is expanded more Worldwide!
Too early to tell for sure, but early performance has not been up to expectations. Google's Find My Device app just isn't locating these trackers as well or frequently as I expected. I would hold off on getting any more for a while to see if the network starts to perform better.
It's a no-brainer, especially if you keep losing your things. I got a pack of 4 units, kept 2 for myself, and gave my brother 2 units. I used 1 unit for my keys, and another for my luggage bag (when I travel). Connects beautifully to Android's Find My Device network.