Ereaders

I'm an avid reader when cruising. While hubby is happy sitting at a bar looking out the window or on the pool deck sunning himself with a beer in hand, I love to read. Although I much prefer a physical book in hand, sometimes it's just not practical, especially if on a long trip with time to read more than one.
For those of you that are also readers, if you have an e-reader, I would love to know your experiences. I'm thinking of getting a Kindle before our next cruise. While I have a tablet, etc, they just don't have the battery life for long term reading. Plus I hear that eReaders are designed to offer less eye strain than traditional screens. Do you find this? Anyway, please share your thoughts and recommendations if you have any.
(FYI, I'm in Australia)