FWIW, I don't like any of your choices. I agree about the step through thing, but, tbh, as step throughs go, that Raleigh isn't the worst. The worst have only a single tube at the bottom of the step through curve, makes for an extremely low step through but it cannot possibly make for a very good handling bike.
IMO the electric bike you should look for has a crank drive (like the Raleighs) but the battery pack is also centrally located as part of the seat tube instead of over the rear wheel. I don't have any examples close to hand but I have seen them around.
I've been meaning to ask you... what does your sig mean?
EDIT:
Get a Discounted Demo Bike With All The Perks | E-Bike Blog | Electric Bicycle News San Francisco
EDIT:
Top 5 Best Electric Bikes | Heavy.com