My experience is proving to be slightly different from the others here.
I have PRS-505 and 950. PRS-505, bought when it had come out, has lasted without any trouble. And someone actually STOOD on my 950! (my favorite
)
I had no option but to upgrade to T-1. While I am happy with the looks and the features, for me , this has proved to be the most unreliable of the three I have used.
It stalls and at times is unresponsive. Some of the pages appear "thin" and one can see the previous page beneath (this is a new problem and has happened only a few times.) Sometimes when I press the "return" button the screen goes totally black for 5-6 seconds before it reaches it's destination. It has also developed a tiny, star-shaped crack. This is not very distracting but is troubling.
The problems I have listed do not happen a lot but collectively they are disturbing and already has me looking for alternatives. Maybe I ended up with a faulty piece!