I have had many electric factory sunroofs over the years. I never had one leak or have a mechanical malfunction. I love them, and use them all the time. Personally I would not own a car without one. I find most women do not open their’s because it will mess up the hair. 
I didn’t care about the sunroof when I bought the car, but I’ve grown to love it.
They are pretty awesome just as long as they don’t break on us haha 