I use my surface book for writing ALL the time. However, the on screen keyboard for the surface book SUCKS. It's annoying to have to constantly take the screen off and on so I just leave it backwards permanently and use this in combination with a roller ball mouse and an adjustable angle lap desk so I can prop it up at any angle to write and lean back to my comfort.This keyboard is the perfect size to be not too small to be awkward but not too big to put in my backpack. The backspace button seems to want to come a little loose sometimes but a good press in locks it back in. It hasn't pooped off yet after about a year of use. It's a bit pricey, but the battery lasts forever and I have rarely any problems. Overall I love it!Update: I have had this thing for over a year now. I still love it! The backspace button never came off, all is working amazing. It's battery life is scary good. I'm pretty sure I haven't charged it in months, and I use it daily. I feel like I'm violating the laws of the natural universe! I had a little accident and snapped off the shift key, I don't know if there's anyway to replace it, it seems like getting keys for a keyboard is not so easy, and this is an out of the US company, so I don't know how much luck I'd have getting from them or how much. Completely my fault. I'm buying a second one, it is worth the cost!