I have a 3000 and a 3500 watt Cook Tek counter top unit. I have not turned a regular surface unit on HIGH since I have had them. The speed and efficiency are overwhelming. Even the 1800 watt Vollrath unit totally spoils you. To put two servings of frozen mixed vegetables in a a covered pan with with a small amount of water and put it on the 3000 or 3500 watt unit and have it boiling HARD in 2 minutes is amazing.
I think back to when we had a gas stove and frozen vegetables came in those blocks inside the waxed white heavy paper carton with the paper over-wrapper showing what was inside. Those blocks took forever to melt and come to a boil over a full flame. I still don't know why my mom did mot at least move the package from the freezer to the refrigerator to give it a head start on thawing, but those frozen blocks thawed faster in a saucepan on our GE's surface units than over a gas flame. The induction is like light years ahead of that.