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You'll have to deal with build issues with the RE0 then I'm afraid. Some people have recommended the ADDIEM, they are more of a sweet sound rather than an actual analytical. Still a good IEM, under 80, mine haven't broken on me yet (but the tips fall off when I take them out of my ears :(). That's all I can give as option then.
If you want to try the Etymotic HF-series or EtyKids series with Glider tips, that's another option. Great build, analytical sound, shallow insertion due to the glider tips. Both seem to come with gliders. Foam tips are also available as well (Shure, Etymotic, Comply, etc. for an additional price). HF-series has foam tips included, EtyKids don't. EtyKids will run you around 40 dollars. HF-series seem to scurt that 100 dollar price range. Buy online to avoid taxes.
The RE0 is already 80 dollars (even with tax, it won't exceed 100), online you most likely won't get charged. It is more of a shallow insertion rather than a deep.