I know I'm resurrecting an old thread, but thought it was better than starting a new one...
I picked up one via Amazon - 8GB Pro X2 for $49
I love it!
Yes the software is made to be "user friendly" which some will find a bit limiting. But I was easily able to change the directory where the images are stored. In fact, it lets you set separate directories for JPG, RAW and VIDEO files.
I don't know how the software was back in January, but as ren-lathe mentions you do not need a FTP site. You can use one if you want to (actually I do), as well as make them available publicly or privately on several picture hosts, and via the eye-fi website.
There's also direct to Android and iPhone/iPad options now.
The Pro X2 is a Class 6 card and is quite quick with my 14mp camera. By the time I walk back to my computer the image is there.
I'm sure that the battery life will suffer, but then the card is an active transmitter... that's to be expected.
Not having to take the card out of the camera, or even remove it from the tripod is well worth it to me. I took tons of pictures last night. I'm working on getting the website up to date inventory wise for the holiday buying season.