analytical signature means, that you hear more details, that you had never before, while warm sounding means some details are lost, but it could be more musical. You must hear it, get some experiences to know what I mean, sorry, buddy.
Try all the expensive phones what they have, it doesn't matter if Denon or AKG, AKG are in general more detailed, but I don't know the situation in lower models
I can see 2 problems in this testing before buying: normal stores doesn't even know the difference between sound of stock earbuds and better one. They just tell you that which are better. In higher priced models the situation is different. It's the taste of listener and some models need an amp to drive.
I was in a store where they had HD595 and some other headphone, but they played it from some ****ty CD player.
Second problem is in IEMs/hygiene: IEM is like a toothbrush, I won't let others to stick it in their ears
only if they change the tips
in customs it counts twice, because it can fit only for one person.