I looked at some of your (the OP) prior post, and see glare is an issue (PRS-600).... the PocketBook 302 will be released in a few weeks. It is touch screen, WIFI...etc. It is my understanding the ones shipping in April or May will have their screen treated with a anti-glare compound that is supposed to help the problem. Perhaps look into this or other non-Sony models...
https://wiki.mobileread.com/wiki/Pocketbook_302