Thanks all -will look into both.
Did 20 miles on Sunday - still not dead.
Unless I'm boring everyone I'll keep adding the odd update / question to this thread, if that's ok.
1. I use the Schwalbe Marathon + and they are worth every penny. Having less punctures is really worth it. I have also used Schwalbe Big Apple and they were very good as well. In future I would not wait for my first puncture, but change the rear tyre straight away.
2. After 2.5 years of use my findings are like this: I wonder if you'll have the comparable experiences:
a. You get much less sweaty on short to moderate distances. I use a poncho, so that helps too (as compared to a closed suit), but I can travel to a big Supermarket (about 2 miles) load up and cycle back uphill (half a mile of 12%) and I will not have to change. Same after a short commute (4.5 miles). I feel I could do the same distances without an eBike, but I'd be having to get changed and have showers a lot more.
b. Your arrival times become predictable. Nowadays I can go downtown (about 20 minutes and about 80 yards lower than where we live.) and come back up (about 22-24 minutes). In the past: rain and wind made the return trip vay between 26 and 40 minutes.
c. All short shopping trips with moderate loads have been replaced with eBike-trips. A basket in the front and a bag on the back can carry quite a lot.
I do not do the distances you do and therefore make do with a cheaper and heavier bike. But the same principles probably hold.