I wouldn't call it horrible but you can't compare it to NetFlix or Hulu. Their selections are very limited and they rarely update ~ every 3 months or so.
I compared netflix streaming to amazon once and they seemed pretty much the same. I have netflix streaming and it seems like there's actually very little worth watching on it, have considered canceling a few times.
I never had Netflix so I can't give a honest comparison but I believe Netflix has their own exclusive shows and their library is atleast 10 times bigger than Amazon's.[1]
