I have three iPods: two iPod Shuffle 2nd gen, and one iPod Nano 1st gen.
If i bring one to Apple store, will I still get 10% discount for the new iPod Touch? Is it like iPod Touch to iPod Touch and iPod Nano to iPod Nano?
I'm pretty sure it's any ipod. I've heard stories about people taking in the old minis and still getting the discount for the 3rd gen, so I'm pretty sure you'd be fine.