Thats the latest files of authors you follow
You will need to purchase an extended license for that (one for each theme/template you put up for sale).
Its also always nice to let the author of a plugin know you are using his product
Its definitely a bad idea to rip the revolution slider preview and use it as your own design
This responsive slider would be a fabulous addon to the bundle:
Congrats mate Welcome to the club!
Probably, but the question is why would you want to sell on another marketplace?
This slider offers everything you need and can be used in themes with an extended license (and credits in your file): http://codecanyon.net/item/slider-revolution-responsive-wordpress-plugin/2751380
Quite a few authors including myself use it in their themes!
Spec wise, the galaxy s3 wins. The iphone looks and feels great though. It highly depends on your personal preference and if the style matters a lot to you.
I have a galaxy s3 (before that s2) before and Im very happy. The large and brillant display is great for surfing the web, games and watching movies on the go