Both camera are after the same customer and their is no reason to pick one over the other.
Here is a comparison of specifications:
Toss a coin.
I'm having a bit of a problem choosing between the Canon T1i and the Nikon D5000 for my next camera. I'm an overall pretty round photographer and take shot pretty much wherever I can. But what I'm really looking forward to getting into is concert photography and portraiture using ring flashes, softboxes, etc. My main dilemma is with low light photography, specifically stage lighting. I've read a ton of reviews and still am unsure on the ability of either camera to shoot in low light with good detail, saturation, and low noise. If anybody has any advice, please let me know.