Hi Shecky! I just did a comparison of these two readers plus the Pocketbook 360 here:
https://www.mobileread.com/forums/showthread.php?t=86531
I'm also considering throwing another reader into my evaluation mix here:
http://www.newegg.com/Product/Produc...-008-_-Product
(disclaimer -- I haven't been able to find much info about the Mentor, but a 6" e-ink screen reader for $130... I might have to find out if it's too good to be true)
I actually read fine off of a 5" screen. The thing is, it's such a minimal movement to push a button to turn the page, it's not that big of a deal if you have to do it more often. That said, I'm still exploring 6" screen options (obviously).
As for the glare issue. It's totally a matter of personal opinion. I've seen reviews ranging from "absolutely unreadable" to "crystal clear" and everywhere in between. One thing is for sure, it's not as clear and high-contrast as the non-touch screens.