What did you end up choosing? We had a Five Star (never had even heard of it) in a home we lived in for 14 years. Never had an issue aside from the temperature being off a bit. Just adjusted setting, comparing it to an oven thermometer.

Forgot to say, i am remodeling our new kitchen and am considering a bluestar range top and wall oven.

I like both brands. One advantage with Bluestar is that it has pullout trays under the burners for ease of cleaning. On the Fivestar, you have to poke around under the burners or perhaps remove them to clean which is a royal pain. That said, they are reliable units with simple, easy to maintain tech just like Bluestar.