I've got a Rohlof with an ATS speed drive, cures the problem of lack gearing range, it's 826% from 13GI to a lot. but the whole lot weighs a ton and probably looses some efficiency when I'm in the high front ratio. Rolls like a brick too, the Rohloff doesn't freewheel as good as it should because in some gears there are still things whirring around. Can't fix it myself either, it leaks oil through the QR, self changing really. Personally I'd probably like a Pinion if i had my chance again, because you can use normal wheels.