What would be the best mp3 to buy for audio quality?

Is the ipod touch a good mp3 player to power good headphones? And which model of the Ipod does it best?

Thank you. I'm thinking into buying them. Are the Ibassos any better?   You have a good taste in music btw. Just saying. I love those albums to death.

Was the bass fuller? How did it change the sound of the cans?

I've heard good things about it, but are there any cons it has I should be aware of? How's the bass and the overall quality? Are there any better amps for senns hd595?

I am inexperienced with audiophile matters, so I apologize in advance if I come across as foolish. I recently purchased Sennheiser 595 headphones and I am reasonably impressed with their performance. But, what amp will complement these cans? I am aware that they will not make an extraordinary...