A lot slower than my older generic branded hob. Can take 10 min to heat enough to fry an egg.... so not great.
More speckled than 'marble effect'. Cannot 'fast turn off' individually, only all rings or press a number of times to get back to zero... my old hob could be double tapped to turn off. Child safety function is crazy... you have to put it on instead of it being a default.
Not terrible, but by no means ahead of the crowd. Oh, and it marks quite easily.