In the end, I think each has it's place, just as people debate which is better, a PC or Mac, each has strengths and each has weaknesses. The Kindle, Nook. iPad issues will be the same, and in the end, it comes down to what do you want out of it, and what are the most important features to you. That will be all the difference in making one better then the other.
The real issue is never directly addressed though. Who owns what you buy? If you buy a CD is it your CD? Obviously you don't own the rights to the music on it, but what about the physical CD? You can give it away, sell it, use it as a frisbee. You own it. DRM takes that away. You do not own what you buy. At any time your right to use it can be revoked for any reason. Look up Amazon and 1984, look up Wal-Mart and MP3's (though they reversed their decision and didn't lock out previously purchased music).
My issue against DRM is not so that I can "steal" things, but so that I OWN what I buy, use it where I choice, and can't have it revoked at any time, or if I want to sell off my collection of movies, mp3's or books, that I can do that too, because I bought them.
An Ada exception is when a routine gets in trouble and says 'Beam me up, Scotty'.