Hi everyone,
I forgot to update this thread

In November I bought a refurbished Aura and liked it very much. Nice weight, nice form factor and the great ability to control the brightness with two fingers.
However when lighted the screen colour wasn't even, pretty much the same way as my first Aura HD but more disturbing, and the contrast wasn't that great. Both problems were moot with the light off.
In the end, I preferred to get a refund and I kept on using the Mini and Aura HD.
Thanks for all your advice