We also decided to keep the cook top oven combo for now. Our current cook top is a Whirlpool and after extensive googling, I found that the cut in the counter is the same dimension for all of their 30" products. We do limit yourself to products that fit a 20.5" by 29.5" hole but there seem to be a lot of cooktops that will fit into that cut out.
They are coming to measure TODAY. Gulp.
I have some decisions to make before the counter arrives the main one being what to do about the faucet.
Our faucet has a long illustrious history with us. I bought it for my kitchen in my last house. I wanted a single lever goose neck faucet which was almost impossible to find in 1997.
I am hoping to end up with something that has this sort of feel to it. Light and bright and clean.