[Ripplinger]

And for myself, I'd get a 650 now and avoid the T1.

-T1 has wi-fi, but I'm perfectly happy sideloading all my books from Calibre.
-T1 has a few fonts you can change to, but no idea if they'll be fonts you'll like where you'll want to change them to something else. You have full font control and can install any font you like if you install PRS+ on the 650, so the fonts aren't even a consideration.
-T1 has a high gloss finish, which is a huge disadvantage to me while reading, I'm always tilting the reader trying to eliminate the glare from it. Yes, you can spend more money and install a skin over it, but why should you have to just to read comfortably.
-650 has a metal front, which helps prevent accidental flexing of the screen and breaking it as easily; T1 is plastic, tradeoff is that it's lighter than the 650, but the 650 is still one of the lightest weight 6" readers available.
-T1 also has that curved bottom, which I personally just detest and wouldn't buy it just for that reason alone even if it didn't have the high gloss finish to it.
-T1 has the dual touch screen, again, nothing I need. Once I set a size to read a book at, it stays at that size and I don't need a touch-zoom function.
- The T1's screen is no improvement over the 650, it's the same.

So yeah, for myself, I'm looking for a spare 350 or possibly even a 650 on sale and will avoid the T1 altogether.