We've had one for a couple of years. I'd never have had it fitted had I known what a pain it is.
When it works it's amazing. I can litteraly put the same pans on daily and you ever know how well it will work. I have expensive induction pans. That's after cheaper ones were as bad.
The contact has to be perfect. I mean they are working then you move one a mil and it stops heating and makes a clicking sound.
They look sleek and good in the kitchen. Yet I regret getting them fitted and wish I had the normal ones that take any pan and heat no matter what.