[medex]

I have SE210's which work well and while they do offer good isolation they are big.  I don't carry a bag with me daily so the SE210's in their case are just too big.  I am looking for a smaller iem that offers good isolation and is not as vulnerable.  I want to have a small pouch where I can gently wind the iem's and carry in pocket.  Isolation is important though since where I mainly listen is very loud.

 

[NiRo]

I have the UE700's and they're great. They're tiny and the isolation on them is great, once they're in I can't hear people talking to me at all. If you're after numbers, they isolate to 26dB.
 
They don't have a pouch though, but a small hard case, that may or may not be too big for you (depends how tight your jeans are )
You mentioned vulnerability though, and these don't have much in the way of strain relief, but if you're keeping them protected and treat em right it shouldn't matter too much..?
 
As for price I paid about £80 for mine, dunno what that would be in dollars.