I get a chuckle when Adorama in NYC lists Canon 50D as "vintage" but in a way that seems fitting when it comes to DSLR technology. And 50D came to the market only at the end of 2008.
50D was and still is a terrific camera for photos but it doesn't do video. If I didn't care about doing video on DSLR, I wouldn't upgrade but having used DSLRs that have video capabilities, I would never, ever go back to lugging two gear around, DSLR and camcorder together.
For most people not into hardcore videography, video usually means snippets of interesting stuff not lasting more than 10 -15 min. T3i does a terrfic job of video as well as pictures. I would sell 50D while it still has any resale value and get T3i in a heart beat. Yeah, 7D is nice but unless you are going to do sports photography that require high frame rate, it is a bit of overkill for your general photographic needs.
