[richman]

I guess with the 505 sony did make it TOO GOOD and has found it hard to make a better model. The same thing happen to canon with High Def camcorders, it made the HV20 TOO GOOD and there are improvements in other ones but it TOO is considered excellent. Not a perfect analogy but shows how KEEPING it SIMPLE is sometimes MORE than adding other features that SCREW UP the BASIC BEAUTY of a functional device that WORKS.
As new eink tech level improves and we move to color screens then these ereaders will use different SCREEN technology and there will be improvement, but at this point they all are using the same tech to make and each company is adding their FEATURES to the mix. Sometimes with success and sometimes not.
Sony should have come up with the 505 super model that FIXES any problems users said would improve it. Faster processor , replaceable battery, and other things we talk about on this forum.