Excerpt: I bought these for my office mates and am returning them. We type all day long and your fingers don't fit well and it's awkward. Odd experience for one that types by touch all day long. I have had great success with this brand but this model isn't the one for us.
Summary: Will buy again for my next wireless keyboard needs unless there's another keyboard that REALLY impresses me.
Pros: Battery life! It came with 2 AAA batteries 10/2012 and is STILL running on the same batteries 02/2015 in a daily use HTPC! According to OpenSUSE's tray battery monitor I'm still at 49% battery. Beat that!
Cons: Wouldn't prefer the profile of the keys for workstation use, but they do just fine on an HTPC.
Excerpt: I purchased the Logitech K270 keyboard in order to open up an additional USB port. I already had a Logitech TrackBall mouse, but had a Microsoft keyboard. I really love the track ball mouse!The keys were slightly larger with the Microsoft keyboard. I imagine I will get used to the smaller keys. One nice feature of the Logitech K270 is the On/Off switch which will prolong the battery life.The K270 doesn't have the 5 preset program keys that I was used to.