The Tab S 10.5 is sleek, easy to use, with a responsive operating system and a super AMOLED screen that gives a picture is...well... super! The images are crystal clear and the colors are bright, making movies and gaming more enjoyable. I have been playing Agent Alice and was delightfully surprised at the more 3d effects of this screen over my Tab 7 in some scenes. The sound is vastly improved. Samsung has eliminated the annoying tinny quality that the speakers in the Tab 7 gave out. The system itself is not laggy at all. Once I stopped drooling over the lovely Titanium color, the feature that attracted me most to Tab S 10.5 is the abilitly to use side by side windows. I deliberately chose this model for that feature in order to use Evernote alongside Chrome to do my university studies. I have to say that I was not in the least disappointed. I have acutally begun to prefer the Samsung over the PC for my studies. Tab S 10.5 integrates seamlessly with multiple keyboards. Unsure of which I would like more, I ordered both the Samsung Titanium keyboard case and the FYY trifold in gold with hidden keyboard, and after trying them out, I decided to keep both. Both keyboards connect wirelessly to the Tab S and are equally efficient. I find that Iike using the Samsung keyboard more at home due to the higher angle at which it holds the screen, and the overall stiffness of the unit for any long typing jobs. The FYY case is perfect for travel, although I use it at home as well, but it does allow me to hold the tablet open like a book for reading; it also has the advantage of being able to be folded in either direction so that it will either hold up the screen to use the unit as a sort of laptop, or folded more flat for reading or laying flat or one can hold it open like a conventional book. While the matching Titanium case adds to the sleekness without adding bulk and has a somewhat more comfortable distance between keys, the FYY case adds some bulk but it also affords some protection, as my relative proved by dropping it three times on the hard bus floor while playing a game. The only improvement I could suggest is to add a trackpad to the native keyboard to use as a mouse. All in all, I would definitely buy this unit again, and both cases.