Never tried a Kortier electric myself, but I heard someone palying one a few weeks ago and sound wise it was nice.
I have a Camac and I love it. The wood ones are a bit heavy. The new DH Light is remarkably light and sounds great. I have tried the L&H and it is also perfectly fine. Lighter than the Camac wood, but I think heavier than the DH Light (by aprox 5 lbs , 2kg). They are all perfectly good harps, it is all about your preference and what is important to you. If weight is important than the DH Light is the way to go.
I just prefere the sound of the Camac electrics, but you really aren’t going to go wrong with any of them.