Hello
I've only just registered, so I hope I get this right, and please forgive me if I don't!
I want to purchase an E-reader as I am fed up of lying in bed with a big magnifying glass in my hand reading my bedtime story

I have Sleep Apnoea, and due to the full face mask I have to wear in bed I can't use my glasses. Therefore, I need one which will give me the largest text display.
I have seen the Sony E-reader, but the biggest display wasn't big enough (don't know what font it was) and the same day tried the BeBook, which again wasn't big enough, but I found it clearer to read that the Sony. I have looked up info on the Cybook, but there are no shops stocking it here where I can try this. I've also looked into the Kindle, which sounds like this might be the best, but don't think this will work here in the UK.
I only need the E-reader for reading in bed and, since looking into this, it would be great to take on holiday.
Please can anyone advise me, as they are quite expensive and I can't afford to make a mistake?
Many thanks