I had NO IDEA I would like this keyboard as much as I do. It's really interesting how you can experience something as simple as falling in love with a KEYBOARD after so many years of not thinking about them at all. Soooo let me start from the beginning on how this all happened and give you the reasons why you should and shouldn't purchase this keyboard.Recently I purchased a Lenovo y520 laptop as my daily puter. Even though I don't play computer games I wanted a rockin fast system and this one was it. Well little did I know along with all the newest and best parts like the extremely fast Solid state hard drive (which by the way if you don't have one in your computer you're missing out on one of life's greatest prizes and I wouldn't live without one), along with all of the goodies this baby came with, it also happens to have a rockin keyboard on it. I didn't even know that there was a difference between keyboards so this was a surprise to me to say the least. But I absolutely fell in love with the keyboard on this laptop. It's not why I bought it...but once you get the feel of the keys and used to them being backlit, it becomes VERY hard to go to anything else.,...and I would almost buy this laptop JUST for this keyboard now that I know it so well.WHELP that brings me to where I am now. I also have two other desktop computers that I was trading a logitech MK320 Keyboard and mouse setup between and every time I would trade out the USB dongle I was thinking #1 how much of a pain in the butt it was to do that, but #2 just how difficult the clunky keys were when I went to type something more than a word or two to name files. Don't get me wrong..it's a cool set up...and Logitech does a great job for the price etc...but compared to my new Lenovo keys...they are sorely lacking. So I went to the store to try out a few keyboards.Let me rephrase that, ALL of them....even the mechanical ones that gamers use...and typist use.....and the ones that click..the ones that don't...the ones that look like Chiclets and well... Literally every kind you can think of. And out of all of them I fell in love with these round keys on this little deal. I was stunned because just like my buddy said...you would think with round keys like this and the distance between them that you'd miss and screw up more often, but such isn't the case. I knew within moments of typing some crazy blurb that I was digging this experience. The one that I used at the store MIGHT have been the larger one with the numeric key pad but I couldn't remember for sure and just popped on this one without the keypad since I don't really need it and there isn't a size difference that I can tell. It types amazingly. I haven't regretted it ONE MOMENT!The beauty of this thing is that you can connect it to three different devices. The funny thing is that I didn't think anything about that when I purchased it. I just figured I'd pair it with the one computer and call it good..but once you have the ability...before I knew it I had it connected to my main work computer...then my Ipad...and then my phone...which...it's really nice to be able to type on your text messages instead of swiftkey or pecking with your fingers. I hadn't even thought of doing that. In fact I only did it...and tried it because I could...and it turned out awesome. Connecting to each device is as easy as a push of the button and it types like NUTS. I have now become officially a keyboard snob. I would literally pay very good money for a great keyboard. The whole experience of not making mistakes when you type, where the whole process is natural is just an experience all it's own and that every person should have.NOW...onto the cons of this thing. Well...I've only had this thing all of a few days, so i can't speak to the battery life, or the longevity of the keys etc, but the one thing that I can come right out and say is a bummer is that it's not backlit. I wanted the ease of typing with this specific keyboard because I tried other logitech keyboards that I wasn't real happy with, and there are only two models with these specific and lovely round keys and they AREN'T backlit. One with and without the keypad as I mentioned. They do have a wireless backlit keyboard but I can't speak to the way it types. I think I typed on that model and passed it up anyway as I was riffling through the models to test. So.... even though I've been ruined and spoiled now that my laptop is backlit and gives me the ability to find the home row easy as pie...AND you have to kind of feel your way around this one to get set up if you can't see really well in the dark..it's still worth it's weight in gold. It just types like a dream...really. And Logitech is a great brand you can trust. what's the downside? It's small so it's easy to use... BARELY smaller than a normal keyboard...types like the wind so I feel like a world class typist....and it's just....the coolest thing ever because it runs on everything effortlessly. I don't get emotional about most things...but the stuff that I really dig...and makes my life easier can get me that way. And this thing is definitely one of them. I have no regrets and I know you won't either.