I've had two Wolf ranges. The first one, made by Wolf for the home was great. The last Wolf range I had was made by subzero. The top worked fine for a couple of years and then the ignitions went crazy. We lived in the country and no Sub zero dealer could get a repair man to come to even look at it. When you turned one burner on the ignition on one of more other burners would start striking and wouldn't stop until we went down to the basement and turned off the power. It was horrible!
The only time we got a repair man was when there was a fire/burning hazard in the ovens and they sent their serviceman. And by the way, the ovens were horrible - uneven heating, broiling etc. If I made corn bread, I'd had to reverse the pan halfway through otherwise one side would over brown and the other side would be under cooked. The repairman's answer to that is "that's how their oven works"!
We recently moved and our current kitchen has a cook top which is from New Zealand, and it's the worst - all different sized burners, badly placed, etc. So now I'm looking for a replacement range top and hoping there's something on the market that will fit in my space and work with my pop up vent. June
Make sure that whatever choice you make, that they have people in your area who will service it; and it would probably be a good idea to have them write it down. And by the way, Sub-Zero was no help at all, other than referring us to dealers in two states, none of whom could get a service person out to our house. And with those Wolf ranges, no one else can service them!