We bought this 30cm domino unit to complement 2 gas burners, as we weren't ready to give up on gas entirely. Good decision. We still use the gas but we find this induction unit so precise that we find ourselves using it a lot, especially for lower heat tasks such as cooking fried eggs and spinach leaves, or omelettes on a stainless steel pan.
The slider control is intuitive and easy to use, and even provide increments of 0.5 from 1 to 9 (ie 1, 1.5, 2, 2.5, etc.)
The front and rear sections can be controlled separately or bridged together and controlled singly. There's no lock on this unit but we like it that way. Just press the power button and the desired heat setting and you're on your way.
Very happy.