I was curious what brands of quality ebikes one can buy. Found this ranking of eBikes on the European market. Short blurbs about each bike is on the web site. To get to the full reviews it looks like one has to subscribe to the magazine. However the list of models is useful to start off some google research.
http://www.atob.org.uk/Electric_Buyers'_Guide.html
Personally I would be excited about the "nano-Brompton" e-Bike at only 14.4kg, foldable with a full 10Ah of LiPo. My parents bought a Brompton foldable about a decade ago and brought it everywhere they were travelling. Rides quite nicely. There's also a foldable review on the above site.
http://www.atob.org.uk/Electric_Buyers'_Guide.html
Personally I would be excited about the "nano-Brompton" e-Bike at only 14.4kg, foldable with a full 10Ah of LiPo. My parents bought a Brompton foldable about a decade ago and brought it everywhere they were travelling. Rides quite nicely. There's also a foldable review on the above site.

Generally, we don't recommend folding electric bikes, but this one is light (14.4kg plus separate battery pannier), whisper quiet, climbs big hills, and goes for miles and miles on a charge. Our early sample had a bigger battery than recent kits, but the relauched Nano will have a similar battery, so our near 50-mile range should be attainable. The Brompton kit now has a narrower 80mm motor, enabling it to slot into the Brompton forks with some judicious fettling, without the expense and trouble of fitting wider ones as on earlier examples.