Originally Answered: IPOD WARS! Should i get an ipod touch (not phone) or an ipod nano?
I would recommend the iPod Touch (:
The application store is more than just games - there's social networking, resources, and other fun and useful tools. The internet connection allows you to do a lot of things, and with wi-fi becoming increasingly common, it allows you to connect to the internet in a number of places.
It's not so large, actually. It's very thin, and I have pants with fairly small pockets that it easily fits into. I've also find the tighter it fits in your pocket the better - makes it harder to pickpocket. The money is worth it, and it isn't so much more expensive. The number of features it has far surpasses the nano, and with this extra money you also get access to hundreds of free games and applications, and the larger screen makes it easier to watch videos, play games, and navigate the internet.
The color shouldn't really be a deciding factor - it'll be in your pockets a lot of time anyway, right? Besides, the iPod Touch is mostly screen- not much to color. And the back is a good mirror (:
EDIT: To answer more of your questions,
The screen doesn't scratch so much, but the back may. The back also tarnishes a little and gets a worn look, like silverware that hasn't been polished, but my iPod has been absolutely abused, so I guess I'm a poor judge. I could probably fix this appearance. It also gets a little dirty, but you can wipe it on something and it looks cleaner.
If you mean your front pocket, no, but back pocket depends where the pockets are, what you sit on, and how hard you sit. It's not terribly likely though, they're built to last.
Again it's front vs back pocket. I keep it in my front pocket and it doesn't bother me much at all. Back pocket it'll depend again, pant pockets differ in position.