Supongo que ya lo habréis visto, pero creo que he encontrado parte de la respuesta que busco:
(fuente: http://blog.the-ebook-reader.com/201...-prs-t1-video/ )
Kindle Touch vs Sony Reader PRS-T1
Kindle Touch Advantages
Supports Kindle ebooks and periodicals from Amazon.
Supports audiobooks from Audible.com.
The Kindle Touch has built in speakers.
Text-to-speech can read most ebooks aloud.
Notes and highlights get saved to a text file for easy reference and exportation (annotations can be exported on the PRS-T1 but you have to use the Sony desktop software to export them as RTF; it’s not as functional or as easy to use).
Supports Kindle Games and Kindle Apps.
X-Ray feature analyzes a book’s contents with references from Wikipedia and Shelfari.
Coupon deals for Amazon and local businesses (Special Offers models).
Optional free 3G wireless (works for Amazon, Wikipedia, and Shelfari).
More internal memory: 4GB vs 2GB.
View popular highlights and notes other readers have left in the book.
Partial page refresh.
Take screenshots (the Sony has this but only for the web browser).
Adjust line spacing.
Sony PRS-T1 Advantages
Landscape mode.
MicroSD card slot for cards up to 32GB.
Web browser works much better.
Faster.
The Sony PRS-T1 can be rooted to run Android apps, including the Kindle for Android app.
Book cover view in library.
On-screen notes and markup.
More font styles to choose from.
Pinch-zooming is smoother and faster.
Comes with a cheap stylus.
Better PDF support, with more zooming options.
Available internationally.
Comes in three colors: red, white, and black.
Comes with 12 dictionaries.
Language interface: English, French, German, Dutch, Italian, and Spanish.
History remembers previously visited pages.
Download library ebooks directly.
Page buttons and nav buttons.
Lighter: 5.9 ounces vs 7.5 ounces.
Set custom screensavers.
(El destacado es mío, de loq ue me interesa)
En definitiva: se exportan mejor las anotaciones del Kindle, pero se trabaja mejor en PDF con el T1
Ahora sí que ando perdido del todo