I ride a hardtail Carrera Kraken with an 8fun 250w front wheel kit on road & trails: It does a good job, pulling 15a max.
I ride a full-suss Saracen Blaze with Rockshox & a Gng 250w mid-drive kit on singletrack & rugged trails: It's not hugely powerful at 14a max, so I'll be,imminently, soldering the shunt for 18-20a. at which point I reckon it'll be a cracking bit of kit.
Summarising - The hardtail is great for decent surfaces, but the bouncer comes into it's own over the rough & is positively undignified on the road!
Strangely, I almost never use the throttle on the hardtail, but use throttle almost exclusively on the bouncer
Possibly because I find steady assistance best on sensible terrain, with me providing the extra hp when needed; but like to work out a bit more over the bumps, with a fistful of grunt when necessary.
So - I need 2 bikes: 1 multipurpose machine won't cut the mustard