BookCat has a 505. The 505 does ePub. A Kindle does not. This is why a Kindle is a poor choice. It's not compatible with any ePub that BC already has without any converting.
But to be honest, once you get a touch scree eInk reader, even if there are buttons, you won't need the page turn buttons. You won;t even think about them. The touch screen is just so nice to use. It's nothing at all like an LCD screen. You do not get easily noticeable fingerprints on the eInk screen like you do on an LCD screen.