Hi Donghyuan125, did you end up making a decision? If you're interested in noise cancellation, it's virtually impossible to beat the QC15's. They are really, really good at it. Nothing can remove all background sounds, but they come pretty close. I know a lot of people rag on the sound--I actually quite like how they sound. I wouldn't call them especially balanced though. They are a bit bass-heavy, but some of the cleanest bass I've heard--and very clean across all frequencies really. They are also ridiculously light and comfortable to wear for very long periods of time.
The noise cancelling on the MS 530's is "basic". I think it's geared mostly for airplane/train type noise, and they help with when my washing machine is running at home (that same type of low rumbly noise similar to a plain/train engine). The ANC on them doesn't do a lot above, I'm guessing, maybe 500-1000Hz or so. That said, there is a noticeable sound difference between having ANC on and off. When off, they do sound quite balanced and clean, if maybe a tiny bit lean/dry (might just be my preference for a slightly bassy/warm presentation). With the ANC on, a bit of a "V" shape is added to the sound. They get a noticeably bassier, ans slightly trebblier, with a slight muddying (to my ears) of the midrange on some material. Comfort wise, I've only had them a few days, but I do notice they can irritate my ear lobes a bit after listening a while, and they are definitely heavier than the Bose, and much tighter.
The main advantage of course of the Phiatons is the Bluetooth, which, if your source(s) supports aptX, seems to sound every bit as good as wired.