XOSS G+? I got a couple of those earlier this month. Only needed one but a couple of days later they had a flash sale for $25 so I got a second for the other road bike.

Setup via the smartphone can be a bit of a PITA, but it works fine once set up. The developer is active on Facebook and responds to user posts, complaints, etc. The app has already had an update since I bought it.

It's the least expensive computer I could find with GPS/GNSS compatibility, and that's compatible with both my older ANT+ only sensors (2012 era Wahoo speed/cadence unit, wired together, driven by magnets), and newer Bluetooth/ANT+ stuff -- Wahoo Tickr, XOSS convertible speed/cadence sensor (induction, no magnet needed).

No navigation aids. It just records our routes and data (accurately so far after several rides of 15-40 miles). I can stop and use my phone for navigation if needed.

Some users complain it takes too long to get a GPS lock, but I've found it helps to turn on the unit as soon as I think about going for a ride. Just turn it on, but don't actually start a ride/GPS lock yet. By the time I'm dressed and ready it'll usually sync with GPS as soon as I actually press the start-ride button outside.

Afterward, to transfer ride data from the XOSS G+ to the phone, I find it helps to keep the two devices as close together as possible. It'll connect more reliably and transfer data quicker, than if the bike and computer are across the room.

Not bad for about the same money as a CatEye computer with no GPS tracking or ability to transfer ride data.

I'm waiting to see some reviews of the Bryton 420, and to see if the price drops. But the XOSS will do for now.