24-105, but I want to move towards another direction. Dpreview is a great GREAT resource. I like to shoot medium format with a digital back Leaf Aptus II. It is in photography, why I would buy a medium format digital back over my camera is the bit-depth thats where the $$$ is. My camera is 14bit and I think the 7d is 12 or 13 I don't remember. But Thats the thing, save money concentrate on good glass! large format is a blast too!
Well, the 7d is great but if you're doing high-end couture outfits (D&B, etc), you most likely would want to go medium format, which If I could afford I'd have the Mamyia 645 or a hassleblad, but 7d is a great camera.
But good glass is essential and in all reality the Sony cameras probably have better glass than Canon and Nikon because they are using Carl Zeiss lenses.
But if you're sticking with canon get the 7d, it's a great camera can't go rong with it. If you're doing PHOTOJOURNALISTIC You would want to stay cropped sensor (mainly in my opinon) because most of your stuff will be print, magazine, tiny photos -- the Canons Bit depth and processor is strong imo. But the 7d is going to have a better time handling the higher ISO's past 1000 which is alot better!
So it's up to you and it also comes down to filter on your lens as well to make that glass the best it can be. Like said before Im trying to sell my 24-105 F4.0 L lens.
I shoot mainly fashion photography, portraits, and some architecture. For candids I try to shoot more in a photo journalistic style. I know that the 5d mark ii would suit my style better but going with the 7D would allow me to buy better lenses.
If you shoot normal day everyday things ranging from family events, to cars, to traveling photos get the 7d, you could save even more money and buy the Rebel T2i which is 18.0 Mp and HD video and is stomping competition, it's a great camera and the rebel I believe has an EASIER learning curve.
Yes you should invest MORE in good glass, I'm selling my 24-105 L series lens for $1,000.00 shipped anywhere perfect condition lens hood, suede carrying bag, and can include the hoya filter which is $145.00 in the price as well.
But 24-105 is good because you get an overall wide angle then can go to standard portrait range (105mm) so just keep a heads up.