This is my first post, I hope I'm in the right space for this post. I would like to upgrade to either one of these IEMs on my next purchase. Which is better or best suited for me? I prefer neutral uncoloured sound. I prefers clarity in my audio. Separation might be of concern for me. I would like an IEM that come close to the Mark Levinson Car Audio on the Lexus IS250 (13/14 speakers) for its clarity and audible separation. Correct me if I'm wrong in my words. Still new at these audiophile subject, but it had turned into an obsession for me. Not much of a bass head but I prefers accuracy in the audible or sound. SE535 ltd <--- Not sure where to begin with this one, but demo'd it. Lacked in bass reproduction (not amped during demo). Westone 4R <--- I like the fact that it have 4 BA to begin with, which in my opinion might do the audio separation better (maybe). Sennheiser IE8 <--- Bass is great, but felt as if that the SQ is coloured and inaccurate. Earsonic SM3v2 <--- I am intrigued by the review, have not demo'd it yet. Looking forward to it. Looking forward to clarity, sound separation, sound reproduction accuracy, sound quality, and build quality is my aim. Not a basshead nor an airhead. Hope someone can help me decide this out. Thanks in advance.