A great substitute for Burning Bush is Ninebark 'Summer Wine'. I have one in a corner on the south side of my house. It doesn't like a lot of intense heat here in South-central Kansas, but it does fine with afternoon shade. It has a nice dark burgundy-green color throughout the spring and summer unlike the plain boring green color of the Burning Bush. It also turns ruby red in the fall, and the color lasts longer than that of Burning Bush. My Ninebark 'Summer Wine' stays bright red through the end of December! It is also drought tolerant once established and insect resistant.
Some people report that The Ninebark 'Summer Wine' is susceptible to powdery mildew, but I think that is unique to those climates that are favorable to powdery mildew. I have not seen any powdery mildew on my Ninebark, mainly because the climate in my part of South-central Kansas isn't favorable to it.