Having used the previous version, along with many other types of keyboards over the years, I have to say that the K270MkII is not bad at all.
The first thing you notice is the body's more sturdy nature when you type. With the feet raised for tilt-type there is no flex whatsoever when you type. You can still flex the body by pressing firmly on the front side under the space bar, but then why would you want to?
The other thing I noticed was the quality of the plastic. The keys still have soft springs, which you either love or hate - although they ARE dead silent when typing, and very smooth.. The keys themselves have a lovely soft feel to the plastic and feel like warm satin - a nice touch.
Also, and this is VERY noticeable, the speed of pick up after 'auto shut off' is unbelievable. I timed it at about 0.2 seconds - so virtually immediate.
The typing itself is.. not bad. If you wanna write a book buy a typists keyboard, but for every day use, even longish emails - it's fine. The ergonomics thing is just one of feel, click, and springy'ness, along with amount of tilt and shape of keys. I write 300,000 word books and my hands would not thank me if doing it on this, but 5,000 words would be no pain at all. Anyway...
All these improvements add up to make a very nice keyboard, and well worth it.
The instructions are quite good, not that you need any. The USB dongle was recognised within a few seconds and I was typing within 25 seconds. Painless.
If you have never owned anything Logitech, don't worry - it's a nice ride. Dependable, and likeable.
And less than £20? ..Honestly you can't go wrong.