New GE convection oven
My thoughts, I don't know if you're just referring to an oven only (like one that goes in a wall) or a range which are sometimes called ovens that has burners.
My $0.02, if it's a glass top range than a warranty is probably worth it. I figure each burner of a glass top range requires 4-5 components... that being two sensors, a computer (shared), and a solenoid (2 solenoids for the burners that have inner/outer control). Multiply that by the typical 5 burners (or 4 burners and +griddle feature) a glass top has, and you've got 16+ parts you're depending on in just the top. Then when you use a burner the burner clicks on/off (instead of maintaining a constant temp like a coil top) to maintain temp which puts wear & tear on the solenoid. If any of those parts fail, the burner can be useless, and if it fails and gets stuck in the on position while you're unaware the top can shatter. So, I think glass top ranges a warranty is probably worth it. They have more parts, the on/off of the burners while cooking puts more wear & tear on them, and if something fails the top can shatter. Now they don't typically fail, they just have a higher likelihood because they require more technology and equipment. It's also that reason the same model stove w/glass top vs. coil top the glass top is typically $100+ more.
Coil top ranges, I would error on NOT having the warranty. Coil top ranges the coils don't use a computer, behind the dial(s) are variable resistors which typically last 30+ years and that's about the extent of their sophistication... one very reliable resistor per burner. They're as basic as can be.
The ovens in either are sophisticated. The ovens have a computer, sensor, and solenoid(s) (that rotate the top/bottom elements going on but neither at the same time), with a light sensor, sometimes an electronic lock feature, clock/timer, and fan. Although it's advanced the oven is not typically used very often and very unlikely to fail within the time specified.
So in summary if this is just an oven or coil top range (or gas) I'd skip the warranty. If it's a glass top range, I would likely get it. And a tip, they don't come with the cords anymore they're usually another $20 and must be purchased with the unit if you want the installers to put it in. They're not allowed to install a cord you hand them, or install it without a cord (they'll only drop it off at your house). So buy it with the cord and I hear it's around 1998 codes changed and stoves went from 3 prongs to 4, you have to know which you have so you get the right one.
Last edited by Piedmont; 12-16-2011 at 12:13 PM.