Won't say one of obviously better than the other. For mainstream music, I'll pick E300. For instrument and Classical, probably E600. Add $9 more to your $50 budget and you can get Etymotic MK5, which is about as reference flat as it can be under $100. But it is an IEM, not an earbud. To mix with earbuds, or with any kind of headphone, you need to beware not to over compensate. The point is to understand what you listen on headphone will not be the same as on loudspeaker.
7/20/15 at 10:18am