Kindle Fire is built off the Android 2.1 phone OS and lacks the speed improvements of 2.2 and 2.3, as well as the tablet interface elements added in 3.X. I would hesitate to call the compatible Apps in the Amazon Appstore "premium" for those reasons. Games will work comparably, but for anything else people there is distinct difference.
Kindle Fire is built off the Android 2.1 phone OS and lacks the speed improvements of 2.2 and 2.3, as well as the tablet interface elements added in 3.X. I would hesitate to call the compatible Apps in the Amazon Appstore "premium" for those reasons. Games will work comparably, but for anything else people there is distinct difference.