Best ~$100 Amp? T3, E7, etc.

I'm hunting down a amp/headphone combo. What would be the best around 100 dollar portable amp? I've seen the nuforce icon mobile, ibasso t3, fiio e7, and the total airhead. It doesn't have to be one of those. It doesn't even have to be a DAC. I just wan't the best sounding one. I mainly listen to orchestra and some rap. The source will be a iPod Classic using a LOD. Could someone link me to a short-length, cheap LOD? I've seen some cheap ones, but none were really as short as I wanted them to be. I haven't decided on the headphones yet. It seems like it's gonna be a ATH-A700 or Shure SRH440s. I know that this isn't the headphone section, but what are a good pair of headphones for the combination of music I listen to, that will also benefit from an amp?

Thank's in advance for any help. 

An amp is necessary as well, because the 3.5mm head-jack on my iPod is busted. No loss, considering the line out w/ amp is superior.

Bump/

Looks great, where do I buy one? I've been looking all I found were ebay auctions.

Actually, I don't live in the US as of now. I'm gonna be shipping the amp overseas. If anything should go wrong during the build, I'd be screwed. Unless it's much easier than I think. I'm a starter fyi. I never had an amp and I've only had one pair of headphones and they were 10 buck Altec-Lansings.