Brook-
We went for a fairly expensive smooth-top electric cook-top when we completely redid our kitchen. We couldn't have gas (condo rules) so we splurged on a GE Profile unit.
Neither of us really like it, though we don't plan to replace it. We don't want to replace our granite counter to fit something else.
Even after two years' practice we aren't sure what kind of temperature we're getting at any particular moment. It's slow to heat up and slow to cool off. I spent about $60 for an infra-red no-contact thermometer, but haven't found it helps that much.
As if that weren't enough, it's a b***h to keep clean. And you HAVE to keep it clean. Splatters and spills tend to bake onto the hot surface. You have to have a special plastic abrasive pad and a special abrasive solution to keep it clean. If that's not strong enough, you have to use a razor-blade scraper to take off stubborn glots of baked-on stuff.
My wife says that's my new hobby in retirement- keeping the cooktop clean. I guess so, but I miss my woodworking shop; this isn't a great substitute.
Even worse, according to the cooktop manual, is spilling sugar on the hot cooktop- apparently it vulcanizes itself onto the glass and can hardly be removed.
We keep consoling ourselves- our cooktop looks REALLY cool! Black glass, no knobs at all, on a black granite counter.
Looks cool when it's clean, that is.
Mike