I have one of these and it's good for a portable unit but it takes about 10 minutes to boil water, whereas a high end unit will do it in a fraction of the time. I was also looking at replacing the entire stove, not just a burner, so something like this:
you do understand the boiling of water and basically everything done on an induction cooker is dependent on the energy needed? this one is at 1800W 220V so your high end machine might be 3x or 5x that.