I have a pretty old paperwhite. When it started deleting books i had side-loaded via calibre, I decided to get a kobo. I have a libra color, and I have to say: price notwithstanding, it's a great device. I don't have a lot of experience with more recent devices, but compared to my 2nd gen paperwhite, it is _amazing_. Color is good enough to read comic books on it, the google drive integration means it's not too hard…
It was so good I got a second one for my 5 year old daughter, figured it was a good alternative to the iPads I see her peers with.