Any advantages you get through prestiging do not affect your gameplay in any way whatsoever, which is why I am staying at 50 for the time being.
1. Gold guns - obviously not
2. Coloured clan tags - nope
3. Extra classes - if you use more than 5 in ONE GAME then you need to look at your play style
4. New emblems - no difference
5. People may think you are a hacker, because most of the prestiges aren't well known yet.
I'd rather get all pro perks plus all guns w/ attachments