In reply to jon:
I'd go gas - it works during power cuts
I used to have gas, but now use an induction hob. I agree with the comments about it being tricky to simmer. First time I ever used one, I all but welded the pan to it, as I forgot to turn it off after cooking.
It is a pain to keep selecting which ring you want to control on the touch screen panel and a number of things will inadvertantly either turn it off or we get errors and beeping sometimes when things get put on it.
It beeps annoyingly when you take a pan off the ring, too - it doesn't understand the concept of tossing pancakes, draining excess liquid and that sort of thing.
It can also turn itself off if something boils over, which is a safety feature, but it's a bit of a daft place to put the buttons, as you have to take all the pans off, clean and dry the surface and start again.
Never noticed any noise from ours once it gets going - makes a bit of an odd "start-up" noise, though.
Compared to gas, it's a doddle to clean, though, and can be handy extra work surface.