Even though sound taste is totally personal but the these kind of over exaggerated statements force me to think that people have lost understanding of quality music.
Totally agreed about sound preferences..
Had auditioned cowon em1 long back but at that point of time it was the best possible option under 1k
The OP was considering Some skull candies which are also know for bass heavy signature along with mi pistons.
Coming to Mi pistons [my exp.for 5-6 mins of audition] they sounded much clear & crisp compared to my Signature Acoustics C12 which are around 2500 INR[also known for bass heavy nature & warm sound]. Midrange of pistons do not get the blanketed/muffled feel compared to C12. bass bleading into midrange is almost none if not much lesser than SA C12.
Even joker a popular reviewer from headfi.org had reviewed pistons & spoken good about them..
Xiaomi Piston 2 Review | The Headphone List