electrically operated toilet experience.

I guess it depends on what you have , I have a Sealand Magnum opus electric toilet and yes it's very reliable and on mine has 3 water levels in the bowl to select from. Control board is in the back of the toilet. Compete info is available online . Like any rv toilet it should hold water in the bowl. Mine started leaking down and cleaning the seal ( toilet brush scrubing the seal ) worked for me but the seal can be replaced. Just as in a manual toilet. Not always the most enjoyable job but fairly easy .
Advantages over manual ? Well it provides a more " home" like experience. Standard flush handle, large bowl, sturdy and hey. When someone spends the type money these coaches cost when new, you get more " complexity :-) maybe you even expect it .