[emellaich]

Of course its up to you. My guess on the decision factors:

Price: 7" $100 to $150 more than the 6" device.

Viewing Area: The 7" is 28% larger (Using E-reader matrix measurements)
- This can be a plus if you have eyesight problems, or read layout-intensive content such as magazines or pdf's. It's not necessary for run-of-the-mill fiction.
- In terms of portability, this means a weight penalty for the 7" device of a similar amount (28% or more). It'll make it more awkward to hold one-handed for long periods. In this regard it'll be better than something like the Kindle DX, but of course a 5-inch reader is much handier.

Then there is the wireless part. My experience with the Kindle tells me that wireless access to the bookstore will be neat. I suspect; however, that Sony will really be pushing the wireless access because they want you to use the device to subscribe to content: Magazines and newspapers. Hence, the 'daily edition' title. I'm sure that lots of people use the Kindle for such a function and others will similarly enjoy the Sony. For me, this is an unneeded feature. As my budget expands to include things like ebook readers, I look to other ways to save. These days, I'd rather get my news/magazines for free on the internet. I don't want to rack up multiple subscriptions for things I can get for free.

Finally, have you checked out the screen on the 600? Some folks are quite happy, but others feel that it has too much glare. I suspect that the touch screen on the 700 will be quite similar. You might want to check it out to see if you are happy.