I own both PB 302 and 602.
302 has glassy screen ,where the actual eink seems a bit deeper under the touch screen, which makes it look a bit darker. It's internet functions are limited, so if you are set on Pocketbook- 602 seems to be a better choice, upcoming 603 would offer you a convenience of touch screen, but it would be stylus only, which means good looking screen, but nessesity to use stylus for any touch screen functions.
Good Luck
Here is 302 screen in comparison with other devices
