I remember some "expert" in the distant past discussing stoves and suggesting that in his/her expert opinion the perfect stove would have a gas cooktop and an electric oven. Whatever...
I'm only an at-home-chef-wannabe and have always used a gas stove. About 22 years ago I got my first gas/convection stove - - a Caloric with the gas cooktop and a combination oven which had the ability to cook with convection alone, gas alone, or a combination of the two. And my best results were always the combination bake. Having said all that, about 4 years ago when it became time to get a new stove, I chose the GE Performance Spectra for the same reason you are considering the GE Profile (open box, great price). Again, gas cooktop and the option for straight gas or convection baking/roasting. My breads, cookies, pizza's etc all come out beautifully with the convection bake feature and I've not yet been disappointed with the convection roast feature either!