BTW, if you are happy with your KA, why replace it? Is it to increase
capacity?

Partially. It's the smaller model (4.5 qt bowl), so you can't knead very
large quantities of bread dough. (However, I also do a lot of other baking
(cakes, in particular) for which the KA is great.) The other part is that
I'm just a gadget freak, I guess.