Warning to anyone thinking about buying one of those portable induction cooktop ("just to see what all the fuss is about"): if it plugs into a standard 120V socket, it's probably not going to boil water any faster than your existing stove! In fact, mine boils even slower than my electric stove. Apparently, the portable ones only go up to around 1800W. If you want to experience the true boil-the-oceans power of induction, you have to get a full range that runs on 240V; those can draw closer to 7000W.

Granted, you can still benefit from the precise temperature setting and the ease of cleaning, but don't expect it to be an apples-to-apples comparison.