If you want a branded heavy (23.5kg) touring bike then the Cube Touring model bikes are good value and will easily have the range you need. Costs are in £1500-£2200 range generally.
Just make sure you get one with zero resist (which here means Bosch ALP or latest gen Bosch Performance motors) so you only have to pedal when tired, on a bad surface or going uphill.
I've done about 6000km on mine without a squeak in the past 1.5 years. It is bombproof.
I commute with it, I tour with it on flat and up hills, I pick up bread from the localbakery on it and I use it as my exercise bike on quick evening fitness loops (with motor off obviously).
Search my name on YouTube for a couple of video reviews of mine if you like.
The lighter bikes (like the Orbea Gain) tend to be based on road bikes rather than what I think of 'touring' environments - which to me means a lot of off-road - rivers, canals, woods, paths of all sorts, but not pure MTB territory.
The lighter bikes with lighter motors are great for good tarmac and better for commuting on roads/good cycle paths but may struggle a bit on more robust surfaces.