The Suburban cooktop in my coach was a royal pain so I replaced it with a Smeg 24" cooktop. Here's a link to one on Amazon: http://www.amazon.com/Smeg-Classic-SR60GHU3-Cooktop-Burners/dp/B005AHKAYO/ref=sr_1_6?ie=UTF8&qid=1350827719&sr=8-6&keywords=smeg+cooktop
It's pricey but for me it was worth it.
Another brand for a similar cooktop is Verona: http://www.amazon.com/Cooktop-Electric-Ignition-Conversion-Included/dp/B005GR0OAI/ref=sr_1_3?ie=UTF8&qid=1350827751&sr=8-3&keywords=verona+cooktop
Most residential cooktops are set to use natural gas but will come with an LP conversion. Usually a matter of just replacing the jets.
Here's some photos of my install:
I built a shallow drawer to fill the gap in the countertop. If your cooktop is a drop-in rather than the slide-in like mine, all that would be needed is to enlarge the opening.
A residential stove needs 120 AC for the burner igniter. I have a 400 watt inverter wired into my coach and works well. The igniter draws current only when lighting a burner so even a smaller inverter would work.
Before traveling, I have to remove the grates and burner tops or else they will jump all over the place.