Nah, you’ve all got it wrong 😛
The best for biking and hill walking is the basic yellow Garmin Etrex H. ~£70, normal batteries and 20 routes, 125 waypoints. Do buy Memory Map (or similar) for a plottin an a plannin and take a map printout with you.
If you want to measure all the other stuff, that’s a training GPS that is.
I have an Etrex H which is brill for what you’ve described, simple to use, cheap and reliable. I also have a Garmin 705 which is expensive (especially as you need to buy mapping), highly complex and not as reliable as the Etrex. It’s also got a mind of it’s own as it’s the bastard child of a Satnav and a cycle computer.
Yes there are Oregon’s, Satmap’s, PDA’s and countless phones. Expensive, complex, fragile, battery hungry etc.
When out and about, you need to know current direction and when to turn. An Etrex will do this. KISS is the way forward.