Comparison

Sony comes on a 5 inch screen. The memory is 512 mb which can hold an average of 350 books. It supports ePub, BBeB, Adobe PDF, TXT, RTF and Microsoft Word text formats. Battery life will last you about 2 weeks or 7500 page turns.

Kindle is a 6 inch screen with 800 x 600 resolution. Memory can hold about 1500 books on 2gb of memory. Supported formats are Kindle (AZW), TXT, Audible (Audible Enhanced (AA, AAX)), MP3, unprotected MOBI, PRC natively. The battery life is good for about 4 days with the wifi on. If the wifi is off it will last about 2 weeks. It comes with a audio jack for listening.