Canon Eos Rebel T2i 18 Mp

Michael asks…Main differences between these cameras, and which one should I buy?http://www.amazon.com/Canon-Digital-Camera-18-55mm-3-5-5-6/dp/B0012YA85A

or

http://www.amazon.com/gp/offer-listing/B001XURPQS/ref=dp_olp_used?ie=UTF8&condition=used


I know the T1i will take awesome video. What else? Is it worth the extra money if I'm willing to spend it?

Also, there's a "Amazon Warehouse Deal" T1i for $623. Even though it's quality checked by Amazon, they still listed it as "Very Good"

Canon Eos more info....