Hi Paul1403
I was in a similar position to you tossing between a 5" or 6". A couple of threads might be of help;
Comparison of 5" and 6" readers.
https://www.mobileread.com/forums/showthread.php?t=54351
wallcraft's review of the Hanlin V5
https://www.mobileread.com/forums/showthread.php?t=55790
(sorry I don't know how to embed links in posts yet).
Hope it is of some help.