This model H100 is far superior to the Insinkerator model Hot1 it is replacing. 
 - hotter
 - classier looking & more robust spout
 - easy to use variable temperature dial
 - quiet - the model Hot1 made a fair amount of noise when heating

One Con - the H100 is bigger (twice as deep) than the Hot1 it is replacing. It was a bit of a problem fitting it under the sink due to the tangle of plumbing, hoses, disposal, etc. . It would not go into the same space as the older, slimmer model. (note - it does have twice the liquid volume vs. the older model.)