Replaced an aging B&D Toaster Oven that no longer heats up properly.  Got this model for several reasons.  Holds a 12' Pizza and large casserole dishes up to 16" overall width.  Like the knobs for longevity.  Heats up very rapidly and there doesn't seem to be any heat issues.  Wonder if those having heating issues have put the drip pan above the lower heating elements?  Bottom two knobs a little hard to turn counter clockwise but I assume that will loosen up with use.  Overall a great convection oven at a very reasonable price!