Ivy, all of these covers look really nice. Really you just need to figure out what works best for you. I wouldn't automatically rule out the Sony branded covers. I think that's the point that Astra was making. I think that they are good quality, flexible and light-weight. It's the ones with the built-in light that add extra bulk but many people love that style too. Many of the people that have had problems with the plastic tabs take their Sony in and out of the cover which causes extra stress and fatigue. I have never had any issues with the Sony covers on my past ereaders because I installed the cover once and kept it like that. I decided on the Oberon cover for my new ereader because the Sony cover for the 950 only comes in black. No color options! I wanted something with more personality.