Our oven spews carbon monoxide, almost but not quite at the "unsafe to use" level (we are careful to provide extra ventilation when it's on), so I'm currently shopping for a range and would love a dual fuel. Even better would be something with an infrared broiler. <sigh> Unfortunately, the house is old and the box can't provide the amperage needed, so I have to go all gas.
I wouldn't give up the gas range top, except for induction.