Buy and try them all, or buy an airplane ticket to Singapore to try them out in person in his store. Really, there's no getting around it, if you wish to know how IEMs sound to you, you have to try them yourself. Yes, measurements do tell you a lot about the sound, but not everything. Fit is very important, as is upper treble which measurement rigs struggle to capture in a way that translate to what you actually hear yourself.
Personally, I'd try two cheaper outlier IEMs, maybe one with (comparatively) weak bass and one with a strong pinna gain. This way you might get a feel for what you like, and what you don't like, in IEMs without having to pay the price for an airplane ticket.
Also note that the frequency response can be adjusted via EQ for most IEMs, but it is hard to adjust the upper treble by looking at graphs since the graphs in that frequency area are inherently inaccurate.
Personally, I look for IEMs with a mild treble response on the graphs and then use shelf filters to taste if I find that I want either more or less energy there. IEMs that measure hot in that 8-10k region tend to be harsh sounding to me no matter what I do with EQ. And bass can be added with EQ for most IEMs.
Personally, I'd try two cheaper outlier IEMs, maybe one with (comparatively) weak bass and one with a strong pinna gain. This way you might get a feel for what you like, and what you don't like, in IEMs without having to pay the price for an airplane ticket.
Also note that the frequency response can be adjusted via EQ for most IEMs, but it is hard to adjust the upper treble by looking at graphs since the graphs in that frequency area are inherently inaccurate.
Personally, I look for IEMs with a mild treble response on the graphs and then use shelf filters to taste if I find that I want either more or less energy there. IEMs that measure hot in that 8-10k region tend to be harsh sounding to me no matter what I do with EQ. And bass can be added with EQ for most IEMs.
