who else perfers the 6" reader?

[issybird]

Ideal for me would be 8" for my armchair and 6" for out and about and in bed. My reality is that I've got a 7.8" which is close enough and I also still use my 5" Mini, especially at the beach.

7" isn't one thing or the other. It's too large to fit a smaller purse and to be comfortable holding in bed, but less than ideal for upright reading at home. If you're going to have only one reader, I see the case for it. But if you have more, or are willing to keep older devices in play (me!), I advocate the two-pronged strategy.