SGS3 - probably your best choice. It's a phone, very reliable, UI is smooth as butter, has microSD, NFC and the Super AMOLED screen will give the deepest black levels ever seen on a smartphone. Great developer support.
Note 2 - if you want a bigger device get this. Basically an overclocked SGS3 with more features. S-Pen and art can be used for graphics and artwork.
DNA - horrible battery life destroys the good points of this smartphone. The screen is the best out of the 3. The software isn't good and you'll be experiencing some lag and bugs due to the lack of optimization of HTC Sense. Worse developer support than the Samsung phones.