I'd recommend a Garmin 840. Don't get the 540, as the newer Garmin OS really is better with Touchscreen. I use a Garmin 840 and previous to that a Garmin 530. The 840 is also faster at doing many things than the 530/830.
From Stefan's list that I disagree with about Garmin computers:
- Glossy screen, so the visibility is poor in full sunshine. (It is glossy but I can see it fine).
- All configuration changes must be done on the device, which is quite tricky (not true)
- Garmin devices are unnecessarily big. (easier to see)
- The touchscreen capability looses its appeal when your ride is full of vibration, when it rains, or you need to use regular full finger gloves (yes, there are some gloves that allow operating touchscreens). For this reasons many Garmin users later buy a button remote... (You can use the buttons on the sides of the 840 without using the touchscreen).
I get all the data from my ebike that I need. So not sure what people are referring to.
Edge Explore 2 would also be good, but it seems to be a bit slower than the 840. If you are using the device for navigation a lot, I would think the quicker interface on the 840 is better. You may be able to find the 840 at a discount so it isn't that much difference in price from the explore 2.
If you want an objective review, DC Rainmaker's site has a good review of all Wahoo vs Garmin vs Hammerhead.
https://www.dcrainmaker.com/2024/05/bike-bike-gps-2024-garmin-hammerhead-karoo-review.html