In addition to what Andy said, the type/ quality of pot you use can make a difference as well. Not necessarily in the ultimate final temp, but in the time it takes to get there. I recently got a new stove top and was cursing it for a few months , cause it seemed to take forever for things to reach the temp I was looking for, until I got new , higher quality pots. These guys get to temp quickly, and hold their heat much longer and better. I didnt realize the importance of a decent pot until just recently. ( not that what I had previously was bad, but the bottom was a little warped, so they didnt sit on the stove top evenly causing certain parts of the pot to get hotter quicker than others ( not too mention they would sometimes spin as I was mixing, which was a real treat). If I had gas probably wouldn't have been as much of an issue due to the flame doing the heating and not sitting on a flat surface.