My Rebels already sit in a drawer while I take my D5100s all over the place.
are you a collector of entry level cameras?
They do an excellent job for low ISO IQ in decent light, nearly as well as their pro-level contemporaries.
They cost a pittance second-hand and are easily resold with minimal, if any, loss of value if you don't keep them too long.
Entry level DSLRs are great cost/performance value, especially used ones! I used plenty of them from Canon's Rebel line; the 350D, 400D, ending with the 450D. Newer models had too much Canon characteristic red banding noise then the prices started going up too fast so switched to the Nikon D5100. D5100 lacks a few minor features even older Rebel series had but the IQ/cost is terrific. Worth it to me to keep some of both lines in inventory when I need a small light body to travel with and I know the work will be within their limitations.
I have good glass for both mounts, gives me plenty of options, depending on what I'm shooting.
I keep a few 450Ds and D5100s around, generally mounted to lenses I don't often use.
I reserve my big guns for more critical work, where their higher-end features are needed or warranted and their better raw files support more intensive PP work.