the ancient mariner
As a kitchen designer I have had to help people with this decision thousands of times. I can only tell you what my preferences are from all those years of experience and thousands of kitchen designs. The whole kitchen business revolves around appliances and I always tell people they can not have a great kitchen without great appliances. Invest your money there first.
In the 50’s when I started (yep 50 years at the same old stand) Thermodore introduced wall ovens and self cleaning –that made it possible for folks to have a self-cleaning electric wall oven that regulated temperature perfectly and have a gas cook top which was better for stove top cooking. They loved it !!!!!!
There were some people who wanted restaurant stoves like Viking and Garland, but as some other posters have cautioned, they were never meant to be in homes. So now the industry makes ranges that look like restaurant types and are fine in the home. Dual-energy units are now available because people still want self-cleaning and the right baking temperature.
My advise—Since cooking is the most important thing you do in the kitchen make it as comfortable and easy to clean as possible. The most comfortable is definetly the wall oven which eliminates bending, makes looking at dials easy and is by far the easiest to clean. They do not make self-cleaning gas ovens or built-in gas ovens. If you have natural gas (not propane, which is slower and does not get nearly as hot as natural) there are lots of good cooktops——but I suggest you look at the new electric units with black glass tops. They are much easier to clean (built in flush to the granite tops we use today) and the good ones have infinite control, automatic shut-offs and timed cooking which make them extremely a pleasure to cook with.
Built-in griddles and grills are fun to have, but take up room and are devils to clean. I prefer things I can put into a sink and scrub, or stick in the good old dishwasher and sterilize. Soooooo, a free standing griddle that is heated by sitting atop of two burners works for me and I do my grilling outdoors.
By the way as a second oven and fast cooking unit I like the GE Advantium. Replaces the microwave because it does the same job but it also bakes (cakes and pies) and old Frank Perdue’s 6# Oven Stuffer Roaster comes out browned and cooked perfectly in less than 1/2 hour—you can’t beat that with a stick. Happy cooking whatever you do.