Product review (1 stars): If you like to bake, this oven is NOT for you.
Don't buy if you use the oven part a lot.  It will go up to temp and then drop temp when you put food in there.  If you bake, you will mess up your baked goods because the temp is so imprecise.  I try to adjust it by the 35-50 degrees it is off but it seems that it is never off by a consistent amount of degrees.  Here is another review that concurs with my experience.
http://ovens.reviewed.com/content/samsung-nx58f5500ss-30-inch-freestanding-gas-range-review

EDIT: At a year and 2 months, the electrical component went on the fritz and NONE of the repair guys would work on Samsungs-- something about Samsung not guaranteeing parts over a month old so they have to order them special and then they take two weeks to arrive.  Between this factor and the potential cost of repair equaling almost half of what we paid, buying a new stove after a year and two months.  NEVER BUY A SAMSUNG STOVE.