Hi, I'm looking to buy some new IEMs to use with my PMP. While at home I prefer high quality, on the road I just need good isolation. The only cheap isolation IEM that I know of is the JVC Marshmallow. I am thinking about purchasing them, but I was also wondering if there were any better...

I am looking for a dac with a built in headphone amp for around $100-$150. Right now I am using my HD555's directly plugged into a headphone jack (terrible I know). Anyways, in the future (when I get some more money), I plan on buying a nicer set of headphones and an amp, but I would like to buy...