Doesn't really matter, the sony is out because of the price. The nearest priced sony is the 350 which has even less memory than the others and no wifi.
The next one up is the 600 which reviewed on here and elsewhere with the reflective screen
https://www.mobileread.com/forums/showthread.php?t=56208
The updated version 650 is £100 more than the others so its totally out. So regardless of the screen reflection the sony is out.
Now as I mentioned in my initial post the reason I would prefer more memory is that 1- I will be adding comics and manga (yes yes I know its not ideal) which take up a bit more space than ebooks, and 2- With the recent loss of my dearly departed mp3 player, it would be nice to have music on external memory sticks if possible.
So now can we please ignore the sony.
Thanks