I'm on my second One (I exchanged it on the advice of some people on this thread and the Kobo customer service) because of battery problems - even though I'm not convinced this is not a software problem - and I regret it. I'll see how it goes with the battery after I've calibrated it (I let it shut off by itself before recharging it), but I preferred the screen of my first one: it was whiter when the natural light was off, while the second one feels like the first One feels like the first with the natural light one step up.
I've always preferred the IR technology, because of reactivity and screen quality, but the One looked much better in the reviews than that disaster Aura 6" which I gave away very soon, and they said it was reactive.
Since I wanted the bigger screen I bought the One despite it being capacitive, but I have difficulties: only a small part of my fingers register, and I find typing works best with the pulpiest part of my little finger. I have difficulty calling small notes, even though I have only kepubs on my Kobos because of this. And my IR Glo HD screen is definitely sharper and better looking.
I have another big problem about reactivity: calling the book list is almost instant in both the Glo HD and the One, but calling collections takes 5" on the Glo, 16" on the One which is definitely painful. I NEED collections to navigate among my more than 2000 books on the device.
I hope at least the battery and reactivity problems will be solved with future F/W, because the One has so much for it:
- first and foremost the real estate, which makes a huge difference, even when compared to the H2O, and for which I'm ready to accept a slight lower sharpness (while deeply regretting that Kobo didn't go the IR way)
- and the comfort light, which I have on manual, and makes reading so much more pleasant in low lighting
- a design that makes it easier to hold than the H2O, though the Glo HD is of course better (and IR).