I have had my fire for some time, in fact it is about time to replace it.  Over all I really can't complain about it at all.  You do have to use the Amazon App shop which is pretty good but the app I need to read my school books is not on there and that is very frustrating!  
But it is like a Timex watch takes a beating and keeps on ticking!  It has been dropped, lost, stolen and I am still using it!  (obviously got it back)
I love all the free books available from Amazon and my local library!  I have watched movies, played games and written letters using my fire.  

Overall I have to recommend this device for the price!