I personally have a T3i. I love it, but I am now wishing a almost a year later that I had gone for something bigger..... ::)
What camera you choose has to do with what you want to use it for, and how into photography you want to get.
If you just kind of want to have a DSLR around, but aren't MAJORLY into photography, a you will most likely be happy with a T1i, or something newer.
If you want to do a lot of tele work, like taking pics at airshows, you should go with a cropframe sensor, like the T3i, 40D, 60D, or 7D.
If you are looking to do lots of portraits or very wide-angle shots, you should probably go with a full-frame sensor like the 5d II.
Both full frame and crop sensors work well for everyday shooting.
My reccommendation:
Go with a 60D. It has the shutter speed and durabillity (along with the control over settigs) of the 40D and and it has the cool fetures of the newest camera, the T3i (like movies shooting, a screen that flips out, a ridicously high ISO speed, if you REALLY need it, etc.), and is almost as new as the T3i.
Plus, Canon is having a 15% af sale on their refurbished items. So, if you get it refurbished from Canon right now, it will cost you about $890 (the same as a new T3i) with a lens (instead of $1100).
http://shop.usa.canon.com/webapp/wcs/st ... _276389_-1Remember, when you buy a DSLR, it should be something that you will be happy with a year or two down the road, not something that you wish you hadden't skimped on. ;)
Hope this helps! Good luck!

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