I went to two stores in an attempt to test out several keyboards.
The Surface type cover was sold old. Compared to other portable keyboards that I'm considering, it sure is nice having the pad on the keyboard to control the curser which the type and touch covers have.
The Microsoft Wedge keyboard felt good when typing on it and I like the cover. I like the idea it works with other tablets to include apple.
The Logitech K810 with backlight was not on display but available so I did not get a change to play with it. I've never owned nor can think of a time when I needed a lite keyboard and I don't like the idea of having to plug it in to charge. But at the right price it might work if one just leaves the back light turned off unless needed, thereby increasing battery life. I like the idea that it works the easiest of what I've seen in terms of pairing with other tablets to include apple. The size is small enough to fit in a bag with the tablet.
Logitech also makes another bluetooth keyboard for windows 8 but from what I can tell it does not work with apple but does with Android. Just like the Wedge it works on batteries which I consider a plus.
The reason I'm considering a bluetooth keyboard is at least two of the ones I looked at are half the price of the surface type cover and as I already own the touch cover it would go to waste. Also, l like the idea of hooking the surface up to the TV, which I've done, and using a keyboard that is not attached to the Surface. I'm getting more used to the touch cover which is fast, but I make a lot of mistakes when typing. Also, my wife has a ipad and could share the keyboard.
Also, I bought a bluetooth mouse which is great for desktop apps such as Excel and Powerpoint.