Yeah, frankly speaking I would like to get one device for all my needs. Imagine if there is a kindle & ipad merged together

you only choose which display you prefer for today - eink or led, swap it like an ordinary case.
I like my ipad, don't regret buying such expensive device. The flexibility what you can do with it is amazing - if you loaded some document that is not displayed correctly all you need to do is a simple search on the web to fing which app supports it

and of course I am very impressed how cheap all those usefull apps are, all I found usefull was free or 0,75€