Still waiting for shock. In the meantime I've been running the original deluxe. Honestly I think it feels better than the coil. I am not sure if that's because the bike just suits air better, or if I did not have the correct spring rate on the coil. I'll do some experimenting when it's back.
There are really two situations where I use it. When I'm sessioning something and I can't (or would rather not) ride up and when I'm getting the bike up the stairs at my flat. I just gently hold the saddle down which gives enough grip for the bike to glide up pretty much anything.
J-Tech have always been really helpful for me. They appear to have a new, more detailed spring calculator.
https://j-techsuspension.co.uk/pages/spring-calc
A progressive or not spring will depend on the kinematics of your frame I think.
I would add to this by saying I would really recommend doing some tours with Noli or Backcountry. They will take you to trails that you can't really get to, even by e bike. Great, great days out.
Question for you Whyte e160 folks. As mentioned above, my shock has popped itself. It's been offered a loan of an air shock from a pal, but it's 60mm rather than 57.5. Pros/cons? Look like plenty of clearance.
I've had very good results with their bearings. Every set of Tech 3 V or E 4s I've used have been absolute crap. The new ones certainly seem to have much better performance, although the reliability is still questionable based on my group of pals.