I would agree that it has got mixed reviews. People either love it or hate it. The latter are generally the iPaders who are getting concerned that Amazon may just one day pose a real threat in the tablet arena
I think because I had no expectations and knew exactly what I was getting and what I wouldn't be able to do there was nothing to really be disapointed about. For what I wanted it for it has met my requirements quite adequately.
It does of course help if you've actually handled one for a while..I don't think I would be this satisfied however if I couldn't have gotten the OS into a version I was more familiar with - like being able to use Google services.