Product review (5 stars): Like it but vastly annoyed by the melting knobs
I've had this range for about a year and a half, and it's been pretty good.  We use LP as the fuel.  I do like the convection; things bake faster with it.  Although if I had it to do over I would probably go with straight gas and save the extra money the dual fuel costs.  Oh, and the griddle is almost not worth the bother.  It's too small and doesn't heat evenly.  I'm better off with a couple of nonstick frying pans for cooking the pancakes.  On the other hand, I love being able to exactly dial in the temperature of the oven, so I can easily cook something at 395 degrees or set it at 210 for the meringues.

However, never in my wildest dreams did I imagine that GE would do what they did -- cheap out and put plastic knobs on the front that melt when you broil with the door open.  My husband was broiling with the door shut, which I hate because it gets too hot in the oven, grease spatters everywhere and burns onto the surfaces inside the oven, and there is always the possibility of forgetting the broiler is on and maybe burning down the house.  So I decided to show him how it's done; I did up some tri-tip very nicely in the broiler with the door ajar.  "Are you sure you're supposed to do it that way?"  he asked in panic.  "Of course", I explained condescendingly, "that's why the oven door has a stop at partly open, so you can broil."

The next day I noticed the plastic knobs were melted.  They look like stainless steel but they are plastic. I looked in the manual and sure enough, it says "The oven door MUST be closed during broiling."  I looked in a manual for a different GE Profile oven, and those directions were to broil with the door open!  What is the difference? On that model, the knobs are located on the back panel, not above the door.

So GE redesigns the thing to have the knobs above the door, puts on cheap plastic knobs, and finally changes the operating manual to instruct people to broil with the freaking door closed so the knobs won't melt!  If that don't beat all, as my grandpa would have said.  Wonder if maybe there are some aftermarket metal knobs?  Or perhaps it's time to get a gas grill for the steaks.  Oh no, here we go again, trying to find a straight-up, well built product.  I do miss the days when American manufacturers made things here, and made them right.

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After giving this some thought, it's a function of the dual fuel design.  Old style gas ranges had the broiler below the oven where broiling heat wouldn't reach the knobs.  Electric ranges have the knobs on the back panel where the broiling heat can't reach them.  Dual fuel has the knobs on the front with the broiler element just below them on top of the oven.

Metal knobs wouldn't work, I guess, because they would get too hot.  So my bad (apologies GE), I will just get a gas grill for meat.  You can get away with broiling toast or something that finishes in a couple minutes.

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February 2012
GE sent me new knobs, which are much better than the flimsy old ones, for free.  I'm changing my review to 5 stars for this reason, also because I really like my range.  Here are a couple of tips:

1) Buying a square nonstick pan will work better for pancakes than the griddle.  It's heavy and heats unevenly.
2) The convection oven ROCKS.  Instead of cooking in a shorter time, though, it's better to set the temperature from 35-50 degrees F cooler than what the recipe says when baking, and it will bake in the same time as the original.  Less likely to burn things.
3) Probably better to run the self-clean cycle oftener than once every 2 years. To clean the oven racks, Barkeepers Friend works really well, they scrub up like new.