I have a question for you (mainly momomo6789, but anyone is more than welcome) on the Ultrasone HFI-780. If I can get a very lightly used pair for $180ish, would these be the headphones to get? I have an Asus rampage 2 extreme and it has an add on x-fi card and in the review you said that they were the best for on board sound without anything turned on, so would these be a good choice for me as I'm not going to add an amp or sound card any time soon? Thanks.