I looked into the Feather for a bit, but my experience with the Pi is much stronger, so I felt more comfortable working with that after I determined the battery I'd need to power it wouldn't be too heavy to lift.
Artemis seems to be Sparkfun’s new line of Feather-compatible boards. They target a pro-level audience vs Feather’s edu audience. The OpenLog Artemis looks interesting for logging telemetry. https://www.sparkfun.com/news/tags/artemis