So I bought the original because of a Reg Review ...
At the time, El Reg gave the one with batteries a 95% rating which was pretty unusual.
Actually it was a joy to use except for the Delete Key (no Backspace). I paired it with my iPad but had to buy a separate piece of apple plastic as a cover for it for traveling, and then had to take the batteries out and swap them around when traveling (since the cover turned the keyboard when it was in the bag). I got used to all of that ... I could easily take 10K words of notes a day on my iPad with iThoughtsHD as the favored app.
And still think it is a great keyboard. So much so that I paired it with my Surface Pro 3 ... and still use it as the primary input device after throwing away my relatively useless iPad.
But now the Reg has watered down its reviewing standards so much that they all seem like primary puff pieces ... and this one doesnt sound like a step up to me ... but still manages 80%.