Personally Flake, while those images are good, I'm certain a Full Frame/DSLR would best them. Take a look at the pictures again, and imagine just for a second the subjects weren't famous... They're still passable, but they aren't works of art. It takes a photographer/editor for sure to make works of art, but the tool, and it's lack of shallow depth of field, is making every image look boring, the bokeh is horrible, and as far as I'm concerned, at least some of the images should have quality bokeh/oof on parts of the subject themselves. The shot second from the top is by far the best ( http://admiringlight.com/blog/wp-content/uploads/2012/05/rory_drive.jpg
), and still requires a touch of editing in post to improve the background blur. My 10 cents. And my personal feeling is that Crop body imaging from 1.6x-2x-2.7x is for most purposes, specifically a consumer level endeavor.
I've looked seriously at switching to micro 4/3rds, I've studied the system, tested it in person on several occasions and after getting a FF, I wouldn't consider the 4/3rds system further. Before I got the FF, and was on 1.6x 7D crop only, it was much more enticing. I would not go back to crop outside of a really useful, high quality point and shoot/camera phone.