same boat as you, but I ended up purchasing a nikon 3100 (this past monday), with the kit lens, and an additional nikon 55-200 mm lens, and case for $640 shipped. The D3000 is out. It's old tech.
The equal comparison would have been the T2i, but it's an additional $200 for the equivalent bundle.
Price aside, here is a quick run down I used to make my decision this week.
Every comparison seemed to indicate I would getter better photos with the nikon, and better movie quality with the canon. There is technical stats I could list here, but to me honestly it was blah blah blah. The photo reviews said nikon D3100 = better pics. Without any way for me to verify on my own, I took them at their word.
The canon does have more megapixels, but everyone in the nikon camp seemed to tell me to ignore that, and just go out and enjoy my shots. And honestly everything gets resized, to fit onto a website anyway.
canon has a wider selection of lenses. While nikon has better quality lenses. I checkout the prices, both nikon/canon lenses cost more then the camera. So I didn't matter to me anyway right now. I figure once I get better at this, then I can always sell this starter set up for a few hundred and switch camps before I have ever invested in expensive lenses.
I played with both at bestbuy. Don't even think about touching the d7000 (if you can find it in stock) or the 60D. If you do, it will take a Herculean effort to go back and give the T2i or the D3100 a second look. The nicer cameras make the intro level ones feel like toys. But they're also more then twice the price. Nikon d7000 = $1500, Canon 60D $1300. Between d3100 and the T2i, they honestly felt about the same to me. I have big hands, so they both felt equally small. The button layout on the nikon seemed more simplistic. It feels like a nintendo controller, using your thumbs with buttons on both sides of the screen.
Nikon D3100 has a teaching mode. Where you go through and make selections on what type of pictures your about to take, and the camera will guide you through how to set up the shot and take better photos. I've played with this a little. But honestly I think I need more tutorials. For right now I can just set it in auto mode and it takes phenomenal pictures.
So I ended up with the Nikon. I absolutely love it so far. Plan on spending another couple of hundred on misc afterwards. Extra batteries, ridiculously expensive memory cards, flash, another lens b/c everyone bashes the kit lens.
hope this helps ...