I have all KA Architect Series II appliances.
Microwave/convection and convection oven combo.
42" French Door fridge. Wish I had done S x S though.
Glass Cook top
Double drawer dishwasher
Warming Drawer
Exhaust fan.
It's been about 4 months. So far so good.

They're all good-looking.

I actually had the Zephyr Pyramid in my last kitchen and I love it. It is not the quietest, but quiet enough. It looks good enough installed that it doesn't have to be perfect. Be sure it's got enough suction for your Caldera, though--that thing can put out some heat! but since the high powered burner is in the middle, maybe the Pyramid will be enough. Double check it though.

Thank you both for your input. I'll certainly make sure that the Zephyr is powerful enough for the Caldera.