As Bullthistle said, 'Firepower' is a dwarf Nandina, with very colorful foliage that intensifies as cold weather sets in. It is 'evergreen' or 'everred'. It rarely exceeds 2 or 3 feet in height and spread, and I have never seen one bear fruit.
The typical burning bush is a euonymus, can get right large if you let it, has a blze of red in the fall and as mentioned before, drops its leaves. In some quarters it is considered invasive.
I think your choice is greatly dependent upon you application and the effect you want to exhibit.
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