Bought a Shure SE210 recently at $199 from Jaben. Still made it in ur 100+ requirement.
Anyway sometimes earphones (or speakers, or women for that matter) not "first impressions friendly".
I can't say for the Koss vs ur Samsung coz i've heard neither. A short overview of the Shures would be its quite mild compared to other earphones which gives more impact on bass and treble. But After a while u might start appreciating the details the Shure delivers. Thats not to say its neutral and boring tho, in fact it sounds more expressive and less fatiguing than other coloured earphones.
In short, u need time to get accustomed to it to know whether u like the sound or not. Earphones that blow u away in the first 5 min wont necessarily sound good after a while either.