Another way to get educated is to go to the next gathering, when there are usually 4-5 types of touring motor-gliders on site with owners who will talk to you endlessly about them. Not certain when the next one will be, but it's a good place to see them.
Search Elfin 20.ex for the latest (soon to be flying) hybrid electric touring motor glider from Germany. 50:1 side-by-side Electric self-launch with hybrid option for long range touring.